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Finding the Fourth Proportional to 218,748.48, 328,124.08 and 60,978.30

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Solution

The fourth proportional to 218,748.48, 328,124.08 and 60,978.30 is: 91,467.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,748.48 : 328,124.08 = 60,978.30 : x
  2. Step 2: Convert to fraction form
    218,748.48/328,124.08 = 60,978.30/x
  3. Step 3: Cross multiply
    218,748.48x = 328,124.08 × 60,978.30
  4. Step 4: Simplify right side
    218,748.48x = 20,008,448,587.46
  5. Step 5: Solve for x
    x = 20,008,448,587.46/218,748.48
  6. Step 6: Final answer
    x = 91,467.83

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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.