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Finding the Fourth Proportional to 358,806.38, 495,656.43 and 339,910.70

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Solution

The fourth proportional to 358,806.38, 495,656.43 and 339,910.70 is: 469,553.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,806.38 : 495,656.43 = 339,910.70 : x
  2. Step 2: Convert to fraction form
    358,806.38/495,656.43 = 339,910.70/x
  3. Step 3: Cross multiply
    358,806.38x = 495,656.43 × 339,910.70
  4. Step 4: Simplify right side
    358,806.38x = 168,478,924,080.80
  5. Step 5: Solve for x
    x = 168,478,924,080.80/358,806.38
  6. Step 6: Final answer
    x = 469,553.87

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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.