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Finding the Fourth Proportional to 307,456.04, 424,251.60 and 171,458.12

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Solution

The fourth proportional to 307,456.04, 424,251.60 and 171,458.12 is: 236,591.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,456.04 : 424,251.60 = 171,458.12 : x
  2. Step 2: Convert to fraction form
    307,456.04/424,251.60 = 171,458.12/x
  3. Step 3: Cross multiply
    307,456.04x = 424,251.60 × 171,458.12
  4. Step 4: Simplify right side
    307,456.04x = 72,741,381,742.99
  5. Step 5: Solve for x
    x = 72,741,381,742.99/307,456.04
  6. Step 6: Final answer
    x = 236,591.16

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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.