Home / 318,553,239,981.20-439,603,647,524.32-172,065,700,640.04

Finding the Fourth Proportional to 318,553,239,981.20, 439,603,647,524.32 and 172,065,700,640.04

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Solution

The fourth proportional to 318,553,239,981.20, 439,603,647,524.32 and 172,065,700,640.04 is: 237,450,762,138.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,553,239,981.20 : 439,603,647,524.32 = 172,065,700,640.04 : x
  2. Step 2: Convert to fraction form
    318,553,239,981.20/439,603,647,524.32 = 172,065,700,640.04/x
  3. Step 3: Cross multiply
    318,553,239,981.20x = 439,603,647,524.32 × 172,065,700,640.04
  4. Step 4: Simplify right side
    318,553,239,981.20x = 75,640,709,615,189,311,356,928
  5. Step 5: Solve for x
    x = 75,640,709,615,189,311,356,928/318,553,239,981.20
  6. Step 6: Final answer
    x = 237,450,762,138.39

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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.