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Finding the Fourth Proportional to 359,417.20, 495,978.06 and 216,149.44

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Solution

The fourth proportional to 359,417.20, 495,978.06 and 216,149.44 is: 298,275.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,417.20 : 495,978.06 = 216,149.44 : x
  2. Step 2: Convert to fraction form
    359,417.20/495,978.06 = 216,149.44/x
  3. Step 3: Cross multiply
    359,417.20x = 495,978.06 × 216,149.44
  4. Step 4: Simplify right side
    359,417.20x = 107,205,379,921.29
  5. Step 5: Solve for x
    x = 107,205,379,921.29/359,417.20
  6. Step 6: Final answer
    x = 298,275.60

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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.