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Finding the Fourth Proportional to 215,041.61, 322,686.79 and 88,658.30

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Solution

The fourth proportional to 215,041.61, 322,686.79 and 88,658.30 is: 133,038.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,041.61 : 322,686.79 = 88,658.30 : x
  2. Step 2: Convert to fraction form
    215,041.61/322,686.79 = 88,658.30/x
  3. Step 3: Cross multiply
    215,041.61x = 322,686.79 × 88,658.30
  4. Step 4: Simplify right side
    215,041.61x = 28,608,862,818.93
  5. Step 5: Solve for x
    x = 28,608,862,818.93/215,041.61
  6. Step 6: Final answer
    x = 133,038.73

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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.