Home / 287,867.52-431,830-88,185.60

Finding the Fourth Proportional to 287,867.52, 431,830 and 88,185.60

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Solution

The fourth proportional to 287,867.52, 431,830 and 88,185.60 is: 132,287.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,867.52 : 431,830 = 88,185.60 : x
  2. Step 2: Convert to fraction form
    287,867.52/431,830 = 88,185.60/x
  3. Step 3: Cross multiply
    287,867.52x = 431,830 × 88,185.60
  4. Step 4: Simplify right side
    287,867.52x = 38,081,187,648
  5. Step 5: Solve for x
    x = 38,081,187,648/287,867.52
  6. Step 6: Final answer
    x = 132,287.20

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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.