Home / 385,400,402.60-577,909,314.30-139,747,231.40

Finding the Fourth Proportional to 385,400,402.60, 577,909,314.30 and 139,747,231.40

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Solution

The fourth proportional to 385,400,402.60, 577,909,314.30 and 139,747,231.40 is: 209,551,484.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,400,402.60 : 577,909,314.30 = 139,747,231.40 : x
  2. Step 2: Convert to fraction form
    385,400,402.60/577,909,314.30 = 139,747,231.40/x
  3. Step 3: Cross multiply
    385,400,402.60x = 577,909,314.30 × 139,747,231.40
  4. Step 4: Simplify right side
    385,400,402.60x = 80,761,226,673,697,424
  5. Step 5: Solve for x
    x = 80,761,226,673,697,424/385,400,402.60
  6. Step 6: Final answer
    x = 209,551,484.97

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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.