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Finding the Fourth Proportional to 385,019.68, 577,463.28 and 104,559.52

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Solution

The fourth proportional to 385,019.68, 577,463.28 and 104,559.52 is: 156,821.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,019.68 : 577,463.28 = 104,559.52 : x
  2. Step 2: Convert to fraction form
    385,019.68/577,463.28 = 104,559.52/x
  3. Step 3: Cross multiply
    385,019.68x = 577,463.28 × 104,559.52
  4. Step 4: Simplify right side
    385,019.68x = 60,379,283,374.43
  5. Step 5: Solve for x
    x = 60,379,283,374.43/385,019.68
  6. Step 6: Final answer
    x = 156,821.29

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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.