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Finding the Fourth Proportional to 235,681.92, 325,240.42 and 128,251.92

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Solution

The fourth proportional to 235,681.92, 325,240.42 and 128,251.92 is: 176,987.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,681.92 : 325,240.42 = 128,251.92 : x
  2. Step 2: Convert to fraction form
    235,681.92/325,240.42 = 128,251.92/x
  3. Step 3: Cross multiply
    235,681.92x = 325,240.42 × 128,251.92
  4. Step 4: Simplify right side
    235,681.92x = 41,712,708,326.61
  5. Step 5: Solve for x
    x = 41,712,708,326.61/235,681.92
  6. Step 6: Final answer
    x = 176,987.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.