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Finding the Fourth Proportional to 404,313.39, 606,542.71 and 138,011.63

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Solution

The fourth proportional to 404,313.39, 606,542.71 and 138,011.63 is: 207,042.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,313.39 : 606,542.71 = 138,011.63 : x
  2. Step 2: Convert to fraction form
    404,313.39/606,542.71 = 138,011.63/x
  3. Step 3: Cross multiply
    404,313.39x = 606,542.71 × 138,011.63
  4. Step 4: Simplify right side
    404,313.39x = 83,709,944,693.97
  5. Step 5: Solve for x
    x = 83,709,944,693.97/404,313.39
  6. Step 6: Final answer
    x = 207,042.23

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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.