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Finding the Fourth Proportional to 521,419.65, 781,932.63 and 240,740.07

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Solution

The fourth proportional to 521,419.65, 781,932.63 and 240,740.07 is: 361,019.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,419.65 : 781,932.63 = 240,740.07 : x
  2. Step 2: Convert to fraction form
    521,419.65/781,932.63 = 240,740.07/x
  3. Step 3: Cross multiply
    521,419.65x = 781,932.63 × 240,740.07
  4. Step 4: Simplify right side
    521,419.65x = 188,242,516,081.48
  5. Step 5: Solve for x
    x = 188,242,516,081.48/521,419.65
  6. Step 6: Final answer
    x = 361,019.22

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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.