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Finding the Fourth Proportional to 404,313.60, 606,470.40 and 138,034.20

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Solution

The fourth proportional to 404,313.60, 606,470.40 and 138,034.20 is: 207,051.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,313.60 : 606,470.40 = 138,034.20 : x
  2. Step 2: Convert to fraction form
    404,313.60/606,470.40 = 138,034.20/x
  3. Step 3: Cross multiply
    404,313.60x = 606,470.40 × 138,034.20
  4. Step 4: Simplify right side
    404,313.60x = 83,713,656,487.68
  5. Step 5: Solve for x
    x = 83,713,656,487.68/404,313.60
  6. Step 6: Final answer
    x = 207,051.30

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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.