Home / 318,553,239,977.21-439,603,647,518.79-172,065,700,636.01

Finding the Fourth Proportional to 318,553,239,977.21, 439,603,647,518.79 and 172,065,700,636.01

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Solution

The fourth proportional to 318,553,239,977.21, 439,603,647,518.79 and 172,065,700,636.01 is: 237,450,762,132.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,553,239,977.21 : 439,603,647,518.79 = 172,065,700,636.01 : x
  2. Step 2: Convert to fraction form
    318,553,239,977.21/439,603,647,518.79 = 172,065,700,636.01/x
  3. Step 3: Cross multiply
    318,553,239,977.21x = 439,603,647,518.79 × 172,065,700,636.01
  4. Step 4: Simplify right side
    318,553,239,977.21x = 75,640,709,612,466,184,650,752
  5. Step 5: Solve for x
    x = 75,640,709,612,466,184,650,752/318,553,239,977.21
  6. Step 6: Final answer
    x = 237,450,762,132.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.