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Finding the Fourth Proportional to 503,456.87, 755,210.18 and 143,680.74

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Solution

The fourth proportional to 503,456.87, 755,210.18 and 143,680.74 is: 215,528.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,456.87 : 755,210.18 = 143,680.74 : x
  2. Step 2: Convert to fraction form
    503,456.87/755,210.18 = 143,680.74/x
  3. Step 3: Cross multiply
    503,456.87x = 755,210.18 × 143,680.74
  4. Step 4: Simplify right side
    503,456.87x = 108,509,155,045.10
  5. Step 5: Solve for x
    x = 108,509,155,045.10/503,456.87
  6. Step 6: Final answer
    x = 215,528.21

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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.