Home / 287,831.80-431,780.10-88,150.60

Finding the Fourth Proportional to 287,831.80, 431,780.10 and 88,150.60

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Solution

The fourth proportional to 287,831.80, 431,780.10 and 88,150.60 is: 132,235.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,831.80 : 431,780.10 = 88,150.60 : x
  2. Step 2: Convert to fraction form
    287,831.80/431,780.10 = 88,150.60/x
  3. Step 3: Cross multiply
    287,831.80x = 431,780.10 × 88,150.60
  4. Step 4: Simplify right side
    287,831.80x = 38,061,674,883.06
  5. Step 5: Solve for x
    x = 38,061,674,883.06/287,831.80
  6. Step 6: Final answer
    x = 132,235.82

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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.