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Finding the Fourth Proportional to 343,979.60, 515,094.60 and 328,233.20

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Solution

The fourth proportional to 343,979.60, 515,094.60 and 328,233.20 is: 491,515.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,979.60 : 515,094.60 = 328,233.20 : x
  2. Step 2: Convert to fraction form
    343,979.60/515,094.60 = 328,233.20/x
  3. Step 3: Cross multiply
    343,979.60x = 515,094.60 × 328,233.20
  4. Step 4: Simplify right side
    343,979.60x = 169,071,148,860.72
  5. Step 5: Solve for x
    x = 169,071,148,860.72/343,979.60
  6. Step 6: Final answer
    x = 491,515.05

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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.