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Finding the Fourth Proportional to 371,702.20, 557,553.30 and 259,727.80

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Solution

The fourth proportional to 371,702.20, 557,553.30 and 259,727.80 is: 389,591.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,702.20 : 557,553.30 = 259,727.80 : x
  2. Step 2: Convert to fraction form
    371,702.20/557,553.30 = 259,727.80/x
  3. Step 3: Cross multiply
    371,702.20x = 557,553.30 × 259,727.80
  4. Step 4: Simplify right side
    371,702.20x = 144,812,091,991.74
  5. Step 5: Solve for x
    x = 144,812,091,991.74/371,702.20
  6. Step 6: Final answer
    x = 389,591.70

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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.