Home / 287,868.52-431,831.50-88,186.60

Finding the Fourth Proportional to 287,868.52, 431,831.50 and 88,186.60

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Solution

The fourth proportional to 287,868.52, 431,831.50 and 88,186.60 is: 132,288.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,868.52 : 431,831.50 = 88,186.60 : x
  2. Step 2: Convert to fraction form
    287,868.52/431,831.50 = 88,186.60/x
  3. Step 3: Cross multiply
    287,868.52x = 431,831.50 × 88,186.60
  4. Step 4: Simplify right side
    287,868.52x = 38,081,751,757.90
  5. Step 5: Solve for x
    x = 38,081,751,757.90/287,868.52
  6. Step 6: Final answer
    x = 132,288.70

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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.