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Finding the Fourth Proportional to 307,658.76, 424,568.23 and 171,691.26

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Solution

The fourth proportional to 307,658.76, 424,568.23 and 171,691.26 is: 236,933.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,658.76 : 424,568.23 = 171,691.26 : x
  2. Step 2: Convert to fraction form
    307,658.76/424,568.23 = 171,691.26/x
  3. Step 3: Cross multiply
    307,658.76x = 424,568.23 × 171,691.26
  4. Step 4: Simplify right side
    307,658.76x = 72,894,654,364.67
  5. Step 5: Solve for x
    x = 72,894,654,364.67/307,658.76
  6. Step 6: Final answer
    x = 236,933.46

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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.