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Finding the Fourth Proportional to 315,760.56, 435,744.45 and 172,517.52

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Solution

The fourth proportional to 315,760.56, 435,744.45 and 172,517.52 is: 238,071.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,760.56 : 435,744.45 = 172,517.52 : x
  2. Step 2: Convert to fraction form
    315,760.56/435,744.45 = 172,517.52/x
  3. Step 3: Cross multiply
    315,760.56x = 435,744.45 × 172,517.52
  4. Step 4: Simplify right side
    315,760.56x = 75,173,551,867.76
  5. Step 5: Solve for x
    x = 75,173,551,867.76/315,760.56
  6. Step 6: Final answer
    x = 238,071.38

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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.