Home / 287,119.50-430,646.38-76,773.84

Finding the Fourth Proportional to 287,119.50, 430,646.38 and 76,773.84

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Solution

The fourth proportional to 287,119.50, 430,646.38 and 76,773.84 is: 115,151.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,119.50 : 430,646.38 = 76,773.84 : x
  2. Step 2: Convert to fraction form
    287,119.50/430,646.38 = 76,773.84/x
  3. Step 3: Cross multiply
    287,119.50x = 430,646.38 × 76,773.84
  4. Step 4: Simplify right side
    287,119.50x = 33,062,375,613.25
  5. Step 5: Solve for x
    x = 33,062,375,613.25/287,119.50
  6. Step 6: Final answer
    x = 115,151.97

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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.