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Finding the Fourth Proportional to 250,784.66, 375,534.73 and 138,339.90

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Solution

The fourth proportional to 250,784.66, 375,534.73 and 138,339.90 is: 207,155.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,784.66 : 375,534.73 = 138,339.90 : x
  2. Step 2: Convert to fraction form
    250,784.66/375,534.73 = 138,339.90/x
  3. Step 3: Cross multiply
    250,784.66x = 375,534.73 × 138,339.90
  4. Step 4: Simplify right side
    250,784.66x = 51,951,437,167.65
  5. Step 5: Solve for x
    x = 51,951,437,167.65/250,784.66
  6. Step 6: Final answer
    x = 207,155.56

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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.