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Finding the Fourth Proportional to 577,446.30, 866,159.92 and 172,639.47

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Solution

The fourth proportional to 577,446.30, 866,159.92 and 172,639.47 is: 258,956.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,446.30 : 866,159.92 = 172,639.47 : x
  2. Step 2: Convert to fraction form
    577,446.30/866,159.92 = 172,639.47/x
  3. Step 3: Cross multiply
    577,446.30x = 866,159.92 × 172,639.47
  4. Step 4: Simplify right side
    577,446.30x = 149,533,389,524.04
  5. Step 5: Solve for x
    x = 149,533,389,524.04/577,446.30
  6. Step 6: Final answer
    x = 258,956.36

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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.