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Finding the Fourth Proportional to 218,332.80, 326,721.60 and 151,459.20

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Solution

The fourth proportional to 218,332.80, 326,721.60 and 151,459.20 is: 226,649.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,332.80 : 326,721.60 = 151,459.20 : x
  2. Step 2: Convert to fraction form
    218,332.80/326,721.60 = 151,459.20/x
  3. Step 3: Cross multiply
    218,332.80x = 326,721.60 × 151,459.20
  4. Step 4: Simplify right side
    218,332.80x = 49,484,992,158.72
  5. Step 5: Solve for x
    x = 49,484,992,158.72/218,332.80
  6. Step 6: Final answer
    x = 226,649.37

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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.