Home / 281,000.12-387,702.06-167,781.56

Finding the Fourth Proportional to 281,000.12, 387,702.06 and 167,781.56

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Solution

The fourth proportional to 281,000.12, 387,702.06 and 167,781.56 is: 231,491.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,000.12 : 387,702.06 = 167,781.56 : x
  2. Step 2: Convert to fraction form
    281,000.12/387,702.06 = 167,781.56/x
  3. Step 3: Cross multiply
    281,000.12x = 387,702.06 × 167,781.56
  4. Step 4: Simplify right side
    281,000.12x = 65,049,256,442.01
  5. Step 5: Solve for x
    x = 65,049,256,442.01/281,000.12
  6. Step 6: Final answer
    x = 231,491.92

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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.