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Finding the Fourth Proportional to 388,714.97, 581,755.80 and 239,050.19

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Solution

The fourth proportional to 388,714.97, 581,755.80 and 239,050.19 is: 357,765.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,714.97 : 581,755.80 = 239,050.19 : x
  2. Step 2: Convert to fraction form
    388,714.97/581,755.80 = 239,050.19/x
  3. Step 3: Cross multiply
    388,714.97x = 581,755.80 × 239,050.19
  4. Step 4: Simplify right side
    388,714.97x = 139,068,834,523.60
  5. Step 5: Solve for x
    x = 139,068,834,523.60/388,714.97
  6. Step 6: Final answer
    x = 357,765.57

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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.