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Finding the Fourth Proportional to 404,287.09, 606,570.47 and 138,234.89

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Solution

The fourth proportional to 404,287.09, 606,570.47 and 138,234.89 is: 207,400.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,287.09 : 606,570.47 = 138,234.89 : x
  2. Step 2: Convert to fraction form
    404,287.09/606,570.47 = 138,234.89/x
  3. Step 3: Cross multiply
    404,287.09x = 606,570.47 × 138,234.89
  4. Step 4: Simplify right side
    404,287.09x = 83,849,202,197.70
  5. Step 5: Solve for x
    x = 83,849,202,197.70/404,287.09
  6. Step 6: Final answer
    x = 207,400.15

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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.