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Finding the Fourth Proportional to 404,617.80, 606,926.70 and 138,314.10

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Solution

The fourth proportional to 404,617.80, 606,926.70 and 138,314.10 is: 207,471.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,617.80 : 606,926.70 = 138,314.10 : x
  2. Step 2: Convert to fraction form
    404,617.80/606,926.70 = 138,314.10/x
  3. Step 3: Cross multiply
    404,617.80x = 606,926.70 × 138,314.10
  4. Step 4: Simplify right side
    404,617.80x = 83,946,520,276.47
  5. Step 5: Solve for x
    x = 83,946,520,276.47/404,617.80
  6. Step 6: Final answer
    x = 207,471.15

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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.