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Finding the Fourth Proportional to 306,134.48, 422,446.92 and 172,007.12

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Solution

The fourth proportional to 306,134.48, 422,446.92 and 172,007.12 is: 237,359.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,134.48 : 422,446.92 = 172,007.12 : x
  2. Step 2: Convert to fraction form
    306,134.48/422,446.92 = 172,007.12/x
  3. Step 3: Cross multiply
    306,134.48x = 422,446.92 × 172,007.12
  4. Step 4: Simplify right side
    306,134.48x = 72,663,878,062.07
  5. Step 5: Solve for x
    x = 72,663,878,062.07/306,134.48
  6. Step 6: Final answer
    x = 237,359.34

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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.