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Finding the Fourth Proportional to 313,217.92, 432,243.90 and 169,979.20

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Solution

The fourth proportional to 313,217.92, 432,243.90 and 169,979.20 is: 234,573.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,217.92 : 432,243.90 = 169,979.20 : x
  2. Step 2: Convert to fraction form
    313,217.92/432,243.90 = 169,979.20/x
  3. Step 3: Cross multiply
    313,217.92x = 432,243.90 × 169,979.20
  4. Step 4: Simplify right side
    313,217.92x = 73,472,472,326.88
  5. Step 5: Solve for x
    x = 73,472,472,326.88/313,217.92
  6. Step 6: Final answer
    x = 234,573.02

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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.