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Finding the Fourth Proportional to 203,672.12, 281,341.56 and 156,515

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Solution

The fourth proportional to 203,672.12, 281,341.56 and 156,515 is: 216,201.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,672.12 : 281,341.56 = 156,515 : x
  2. Step 2: Convert to fraction form
    203,672.12/281,341.56 = 156,515/x
  3. Step 3: Cross multiply
    203,672.12x = 281,341.56 × 156,515
  4. Step 4: Simplify right side
    203,672.12x = 44,034,174,263.40
  5. Step 5: Solve for x
    x = 44,034,174,263.40/203,672.12
  6. Step 6: Final answer
    x = 216,201.29

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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.