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Finding the Fourth Proportional to 316,449.73, 436,701.18 and 173,218.87

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Solution

The fourth proportional to 316,449.73, 436,701.18 and 173,218.87 is: 239,042.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,449.73 : 436,701.18 = 173,218.87 : x
  2. Step 2: Convert to fraction form
    316,449.73/436,701.18 = 173,218.87/x
  3. Step 3: Cross multiply
    316,449.73x = 436,701.18 × 173,218.87
  4. Step 4: Simplify right side
    316,449.73x = 75,644,884,927.27
  5. Step 5: Solve for x
    x = 75,644,884,927.27/316,449.73
  6. Step 6: Final answer
    x = 239,042.34

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1.5x scale

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.