Home / 287,869.52-431,833-88,187.60

Finding the Fourth Proportional to 287,869.52, 431,833 and 88,187.60

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Solution

The fourth proportional to 287,869.52, 431,833 and 88,187.60 is: 132,290.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,869.52 : 431,833 = 88,187.60 : x
  2. Step 2: Convert to fraction form
    287,869.52/431,833 = 88,187.60/x
  3. Step 3: Cross multiply
    287,869.52x = 431,833 × 88,187.60
  4. Step 4: Simplify right side
    287,869.52x = 38,082,315,870.80
  5. Step 5: Solve for x
    x = 38,082,315,870.80/287,869.52
  6. Step 6: Final answer
    x = 132,290.20

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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.