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Finding the Fourth Proportional to 404,425.52, 606,638.28 and 138,188.24

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Solution

The fourth proportional to 404,425.52, 606,638.28 and 138,188.24 is: 207,282.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,425.52 : 606,638.28 = 138,188.24 : x
  2. Step 2: Convert to fraction form
    404,425.52/606,638.28 = 138,188.24/x
  3. Step 3: Cross multiply
    404,425.52x = 606,638.28 × 138,188.24
  4. Step 4: Simplify right side
    404,425.52x = 83,830,276,229.83
  5. Step 5: Solve for x
    x = 83,830,276,229.83/404,425.52
  6. Step 6: Final answer
    x = 207,282.36

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1.5x scale

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.