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Finding the Fourth Proportional to 225,397.26, 311,073.05 and 143,728.52

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Solution

The fourth proportional to 225,397.26, 311,073.05 and 143,728.52 is: 198,361.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,397.26 : 311,073.05 = 143,728.52 : x
  2. Step 2: Convert to fraction form
    225,397.26/311,073.05 = 143,728.52/x
  3. Step 3: Cross multiply
    225,397.26x = 311,073.05 × 143,728.52
  4. Step 4: Simplify right side
    225,397.26x = 44,710,067,892.34
  5. Step 5: Solve for x
    x = 44,710,067,892.34/225,397.26
  6. Step 6: Final answer
    x = 198,361.19

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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.