Home / 521,045.27-781,159.61-205,738.19

Finding the Fourth Proportional to 521,045.27, 781,159.61 and 205,738.19

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Solution

The fourth proportional to 521,045.27, 781,159.61 and 205,738.19 is: 308,446.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,045.27 : 781,159.61 = 205,738.19 : x
  2. Step 2: Convert to fraction form
    521,045.27/781,159.61 = 205,738.19/x
  3. Step 3: Cross multiply
    521,045.27x = 781,159.61 × 205,738.19
  4. Step 4: Simplify right side
    521,045.27x = 160,714,363,800.40
  5. Step 5: Solve for x
    x = 160,714,363,800.40/521,045.27
  6. Step 6: Final answer
    x = 308,446.07

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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.