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Finding the Fourth Proportional to 143,344.52, 215,060.30 and 57,911.56

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Solution

The fourth proportional to 143,344.52, 215,060.30 and 57,911.56 is: 86,884.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,344.52 : 215,060.30 = 57,911.56 : x
  2. Step 2: Convert to fraction form
    143,344.52/215,060.30 = 57,911.56/x
  3. Step 3: Cross multiply
    143,344.52x = 215,060.30 × 57,911.56
  4. Step 4: Simplify right side
    143,344.52x = 12,454,477,467.07
  5. Step 5: Solve for x
    x = 12,454,477,467.07/143,344.52
  6. Step 6: Final answer
    x = 86,884.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.