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Finding the Fourth Proportional to 404,329.80, 606,548.70 and 138,023.40

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Solution

The fourth proportional to 404,329.80, 606,548.70 and 138,023.40 is: 207,053.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,329.80 : 606,548.70 = 138,023.40 : x
  2. Step 2: Convert to fraction form
    404,329.80/606,548.70 = 138,023.40/x
  3. Step 3: Cross multiply
    404,329.80x = 606,548.70 × 138,023.40
  4. Step 4: Simplify right side
    404,329.80x = 83,717,913,839.58
  5. Step 5: Solve for x
    x = 83,717,913,839.58/404,329.80
  6. Step 6: Final answer
    x = 207,053.53

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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.