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Finding the Fourth Proportional to 218,521.40, 327,741.60 and 60,717.20

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Solution

The fourth proportional to 218,521.40, 327,741.60 and 60,717.20 is: 91,064.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,521.40 : 327,741.60 = 60,717.20 : x
  2. Step 2: Convert to fraction form
    218,521.40/327,741.60 = 60,717.20/x
  3. Step 3: Cross multiply
    218,521.40x = 327,741.60 × 60,717.20
  4. Step 4: Simplify right side
    218,521.40x = 19,899,552,275.52
  5. Step 5: Solve for x
    x = 19,899,552,275.52/218,521.40
  6. Step 6: Final answer
    x = 91,064.55

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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.