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Finding the Fourth Proportional to 404,387.84, 606,653.15 and 138,085.97

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Solution

The fourth proportional to 404,387.84, 606,653.15 and 138,085.97 is: 207,153.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,387.84 : 606,653.15 = 138,085.97 : x
  2. Step 2: Convert to fraction form
    404,387.84/606,653.15 = 138,085.97/x
  3. Step 3: Cross multiply
    404,387.84x = 606,653.15 × 138,085.97
  4. Step 4: Simplify right side
    404,387.84x = 83,770,284,947.61
  5. Step 5: Solve for x
    x = 83,770,284,947.61/404,387.84
  6. Step 6: Final answer
    x = 207,153.32

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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.