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Finding the Fourth Proportional to 243,243.28, 335,672.50 and 135,815.12

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Solution

The fourth proportional to 243,243.28, 335,672.50 and 135,815.12 is: 187,423.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,243.28 : 335,672.50 = 135,815.12 : x
  2. Step 2: Convert to fraction form
    243,243.28/335,672.50 = 135,815.12/x
  3. Step 3: Cross multiply
    243,243.28x = 335,672.50 × 135,815.12
  4. Step 4: Simplify right side
    243,243.28x = 45,589,400,868.20
  5. Step 5: Solve for x
    x = 45,589,400,868.20/243,243.28
  6. Step 6: Final answer
    x = 187,423.06

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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.