Home / 287,824.15-431,697.33-77,474.71

Finding the Fourth Proportional to 287,824.15, 431,697.33 and 77,474.71

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Solution

The fourth proportional to 287,824.15, 431,697.33 and 77,474.71 is: 116,201.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,824.15 : 431,697.33 = 77,474.71 : x
  2. Step 2: Convert to fraction form
    287,824.15/431,697.33 = 77,474.71/x
  3. Step 3: Cross multiply
    287,824.15x = 431,697.33 × 77,474.71
  4. Step 4: Simplify right side
    287,824.15x = 33,445,625,449.52
  5. Step 5: Solve for x
    x = 33,445,625,449.52/287,824.15
  6. Step 6: Final answer
    x = 116,201.60

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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.