Home / 318,913,603.20-478,370,404.80-272,997,100.80

Finding the Fourth Proportional to 318,913,603.20, 478,370,404.80 and 272,997,100.80

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Solution

The fourth proportional to 318,913,603.20, 478,370,404.80 and 272,997,100.80 is: 409,495,651.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,913,603.20 : 478,370,404.80 = 272,997,100.80 : x
  2. Step 2: Convert to fraction form
    318,913,603.20/478,370,404.80 = 272,997,100.80/x
  3. Step 3: Cross multiply
    318,913,603.20x = 478,370,404.80 × 272,997,100.80
  4. Step 4: Simplify right side
    318,913,603.20x = 130,593,733,618,922,416
  5. Step 5: Solve for x
    x = 130,593,733,618,922,416/318,913,603.20
  6. Step 6: Final answer
    x = 409,495,651.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.