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Finding the Fourth Proportional to 372,103.80, 556,989.30 and 267,127.80

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Solution

The fourth proportional to 372,103.80, 556,989.30 and 267,127.80 is: 399,854.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,103.80 : 556,989.30 = 267,127.80 : x
  2. Step 2: Convert to fraction form
    372,103.80/556,989.30 = 267,127.80/x
  3. Step 3: Cross multiply
    372,103.80x = 556,989.30 × 267,127.80
  4. Step 4: Simplify right side
    372,103.80x = 148,787,326,332.54
  5. Step 5: Solve for x
    x = 148,787,326,332.54/372,103.80
  6. Step 6: Final answer
    x = 399,854.36

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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.