Home / 515,438.30-772,972.20-178,387.52

Finding the Fourth Proportional to 515,438.30, 772,972.20 and 178,387.52

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Solution

The fourth proportional to 515,438.30, 772,972.20 and 178,387.52 is: 267,517.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,438.30 : 772,972.20 = 178,387.52 : x
  2. Step 2: Convert to fraction form
    515,438.30/772,972.20 = 178,387.52/x
  3. Step 3: Cross multiply
    515,438.30x = 772,972.20 × 178,387.52
  4. Step 4: Simplify right side
    515,438.30x = 137,888,593,786.94
  5. Step 5: Solve for x
    x = 137,888,593,786.94/515,438.30
  6. Step 6: Final answer
    x = 267,517.17

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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.