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Finding the Fourth Proportional to 384,781.38, 577,248.61 and 118,530.53

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Solution

The fourth proportional to 384,781.38, 577,248.61 and 118,530.53 is: 177,819.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,781.38 : 577,248.61 = 118,530.53 : x
  2. Step 2: Convert to fraction form
    384,781.38/577,248.61 = 118,530.53/x
  3. Step 3: Cross multiply
    384,781.38x = 577,248.61 × 118,530.53
  4. Step 4: Simplify right side
    384,781.38x = 68,421,583,685.06
  5. Step 5: Solve for x
    x = 68,421,583,685.06/384,781.38
  6. Step 6: Final answer
    x = 177,819.37

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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.