Home / 391,436,802.20-587,155,203.30-161,287,419.80

Finding the Fourth Proportional to 391,436,802.20, 587,155,203.30 and 161,287,419.80

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Solution

The fourth proportional to 391,436,802.20, 587,155,203.30 and 161,287,419.80 is: 241,931,129.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,436,802.20 : 587,155,203.30 = 161,287,419.80 : x
  2. Step 2: Convert to fraction form
    391,436,802.20/587,155,203.30 = 161,287,419.80/x
  3. Step 3: Cross multiply
    391,436,802.20x = 587,155,203.30 × 161,287,419.80
  4. Step 4: Simplify right side
    391,436,802.20x = 94,700,747,762,401,440
  5. Step 5: Solve for x
    x = 94,700,747,762,401,440/391,436,802.20
  6. Step 6: Final answer
    x = 241,931,129.70

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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.