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Finding the Fourth Proportional to 639,314.38, 959,399.61 and 265,337.74

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Solution

The fourth proportional to 639,314.38, 959,399.61 and 265,337.74 is: 398,184.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,314.38 : 959,399.61 = 265,337.74 : x
  2. Step 2: Convert to fraction form
    639,314.38/959,399.61 = 265,337.74/x
  3. Step 3: Cross multiply
    639,314.38x = 959,399.61 × 265,337.74
  4. Step 4: Simplify right side
    639,314.38x = 254,564,924,274.28
  5. Step 5: Solve for x
    x = 254,564,924,274.28/639,314.38
  6. Step 6: Final answer
    x = 398,184.26

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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.