Home / 312,410.76-431,127.06-169,171.38

Finding the Fourth Proportional to 312,410.76, 431,127.06 and 169,171.38

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Solution

The fourth proportional to 312,410.76, 431,127.06 and 169,171.38 is: 233,456.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,410.76 : 431,127.06 = 169,171.38 : x
  2. Step 2: Convert to fraction form
    312,410.76/431,127.06 = 169,171.38/x
  3. Step 3: Cross multiply
    312,410.76x = 431,127.06 × 169,171.38
  4. Step 4: Simplify right side
    312,410.76x = 72,934,359,695.54
  5. Step 5: Solve for x
    x = 72,934,359,695.54/312,410.76
  6. Step 6: Final answer
    x = 233,456.62

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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.