Home / 218,717.60-328,076.40-148,215.20

Finding the Fourth Proportional to 218,717.60, 328,076.40 and 148,215.20

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Solution

The fourth proportional to 218,717.60, 328,076.40 and 148,215.20 is: 222,322.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,717.60 : 328,076.40 = 148,215.20 : x
  2. Step 2: Convert to fraction form
    218,717.60/328,076.40 = 148,215.20/x
  3. Step 3: Cross multiply
    218,717.60x = 328,076.40 × 148,215.20
  4. Step 4: Simplify right side
    218,717.60x = 48,625,909,241.28
  5. Step 5: Solve for x
    x = 48,625,909,241.28/218,717.60
  6. Step 6: Final answer
    x = 222,322.80

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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.