Home / 267,531.20-401,366.40-77,987.28

Finding the Fourth Proportional to 267,531.20, 401,366.40 and 77,987.28

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Solution

The fourth proportional to 267,531.20, 401,366.40 and 77,987.28 is: 117,001.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,531.20 : 401,366.40 = 77,987.28 : x
  2. Step 2: Convert to fraction form
    267,531.20/401,366.40 = 77,987.28/x
  3. Step 3: Cross multiply
    267,531.20x = 401,366.40 × 77,987.28
  4. Step 4: Simplify right side
    267,531.20x = 31,301,473,819.39
  5. Step 5: Solve for x
    x = 31,301,473,819.39/267,531.20
  6. Step 6: Final answer
    x = 117,001.21

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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.