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Finding the Fourth Proportional to 220,045.86, 330,177.96 and 87,021.54

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Solution

The fourth proportional to 220,045.86, 330,177.96 and 87,021.54 is: 130,575.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,045.86 : 330,177.96 = 87,021.54 : x
  2. Step 2: Convert to fraction form
    220,045.86/330,177.96 = 87,021.54/x
  3. Step 3: Cross multiply
    220,045.86x = 330,177.96 × 87,021.54
  4. Step 4: Simplify right side
    220,045.86x = 28,732,594,553.26
  5. Step 5: Solve for x
    x = 28,732,594,553.26/220,045.86
  6. Step 6: Final answer
    x = 130,575.48

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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.