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Finding the Fourth Proportional to 486,388.13, 729,073.64 and 166,432.59

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Solution

The fourth proportional to 486,388.13, 729,073.64 and 166,432.59 is: 249,474.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,388.13 : 729,073.64 = 166,432.59 : x
  2. Step 2: Convert to fraction form
    486,388.13/729,073.64 = 166,432.59/x
  3. Step 3: Cross multiply
    486,388.13x = 729,073.64 × 166,432.59
  4. Step 4: Simplify right side
    486,388.13x = 121,341,614,622.01
  5. Step 5: Solve for x
    x = 121,341,614,622.01/486,388.13
  6. Step 6: Final answer
    x = 249,474.87

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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.