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Finding the Fourth Proportional to 317,680.56, 438,377.49 and 174,449.88

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Solution

The fourth proportional to 317,680.56, 438,377.49 and 174,449.88 is: 240,728.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,680.56 : 438,377.49 = 174,449.88 : x
  2. Step 2: Convert to fraction form
    317,680.56/438,377.49 = 174,449.88/x
  3. Step 3: Cross multiply
    317,680.56x = 438,377.49 × 174,449.88
  4. Step 4: Simplify right side
    317,680.56x = 76,474,900,525.20
  5. Step 5: Solve for x
    x = 76,474,900,525.20/317,680.56
  6. Step 6: Final answer
    x = 240,728.93

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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.