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Finding the Fourth Proportional to 408,987.64, 564,419.48 and 236,902.86

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Solution

The fourth proportional to 408,987.64, 564,419.48 and 236,902.86 is: 326,935.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,987.64 : 564,419.48 = 236,902.86 : x
  2. Step 2: Convert to fraction form
    408,987.64/564,419.48 = 236,902.86/x
  3. Step 3: Cross multiply
    408,987.64x = 564,419.48 × 236,902.86
  4. Step 4: Simplify right side
    408,987.64x = 133,712,591,247.78
  5. Step 5: Solve for x
    x = 133,712,591,247.78/408,987.64
  6. Step 6: Final answer
    x = 326,935.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.