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Finding the Fourth Proportional to 328,890.48, 493,294.71 and 92,251.61

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Solution

The fourth proportional to 328,890.48, 493,294.71 and 92,251.61 is: 138,365.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,890.48 : 493,294.71 = 92,251.61 : x
  2. Step 2: Convert to fraction form
    328,890.48/493,294.71 = 92,251.61/x
  3. Step 3: Cross multiply
    328,890.48x = 493,294.71 × 92,251.61
  4. Step 4: Simplify right side
    328,890.48x = 45,507,230,412.39
  5. Step 5: Solve for x
    x = 45,507,230,412.39/328,890.48
  6. Step 6: Final answer
    x = 138,365.91

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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.