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Finding the Fourth Proportional to 404,927.64, 606,725.01 and 138,542.58

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Solution

The fourth proportional to 404,927.64, 606,725.01 and 138,542.58 is: 207,585.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,927.64 : 606,725.01 = 138,542.58 : x
  2. Step 2: Convert to fraction form
    404,927.64/606,725.01 = 138,542.58/x
  3. Step 3: Cross multiply
    404,927.64x = 606,725.01 × 138,542.58
  4. Step 4: Simplify right side
    404,927.64x = 84,057,248,235.93
  5. Step 5: Solve for x
    x = 84,057,248,235.93/404,927.64
  6. Step 6: Final answer
    x = 207,585.85

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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.