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Finding the Fourth Proportional to 344,088.40, 516,132.60 and 218,117.20

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Solution

The fourth proportional to 344,088.40, 516,132.60 and 218,117.20 is: 327,175.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,088.40 : 516,132.60 = 218,117.20 : x
  2. Step 2: Convert to fraction form
    344,088.40/516,132.60 = 218,117.20/x
  3. Step 3: Cross multiply
    344,088.40x = 516,132.60 × 218,117.20
  4. Step 4: Simplify right side
    344,088.40x = 112,577,397,540.72
  5. Step 5: Solve for x
    x = 112,577,397,540.72/344,088.40
  6. Step 6: Final answer
    x = 327,175.80

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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.