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Finding the Fourth Proportional to 316,517.10, 436,799.02 and 195,655.28

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Solution

The fourth proportional to 316,517.10, 436,799.02 and 195,655.28 is: 270,007.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,517.10 : 436,799.02 = 195,655.28 : x
  2. Step 2: Convert to fraction form
    316,517.10/436,799.02 = 195,655.28/x
  3. Step 3: Cross multiply
    316,517.10x = 436,799.02 × 195,655.28
  4. Step 4: Simplify right side
    316,517.10x = 85,462,034,561.83
  5. Step 5: Solve for x
    x = 85,462,034,561.83/316,517.10
  6. Step 6: Final answer
    x = 270,007.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.