Home / 318,854,557.20-478,393,810.20-137,157,430.80

Finding the Fourth Proportional to 318,854,557.20, 478,393,810.20 and 137,157,430.80

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Solution

The fourth proportional to 318,854,557.20, 478,393,810.20 and 137,157,430.80 is: 205,784,312.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,854,557.20 : 478,393,810.20 = 137,157,430.80 : x
  2. Step 2: Convert to fraction form
    318,854,557.20/478,393,810.20 = 137,157,430.80/x
  3. Step 3: Cross multiply
    318,854,557.20x = 478,393,810.20 × 137,157,430.80
  4. Step 4: Simplify right side
    318,854,557.20x = 65,615,265,917,654,840
  5. Step 5: Solve for x
    x = 65,615,265,917,654,840/318,854,557.20
  6. Step 6: Final answer
    x = 205,784,312.74

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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.