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Finding the Fourth Proportional to 281,135.28, 387,928.40 and 167,934

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Solution

The fourth proportional to 281,135.28, 387,928.40 and 167,934 is: 231,726.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,135.28 : 387,928.40 = 167,934 : x
  2. Step 2: Convert to fraction form
    281,135.28/387,928.40 = 167,934/x
  3. Step 3: Cross multiply
    281,135.28x = 387,928.40 × 167,934
  4. Step 4: Simplify right side
    281,135.28x = 65,146,367,925.60
  5. Step 5: Solve for x
    x = 65,146,367,925.60/281,135.28
  6. Step 6: Final answer
    x = 231,726.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.