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Finding the Fourth Proportional to 307,377.11, 424,182.23 and 171,419.65

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Solution

The fourth proportional to 307,377.11, 424,182.23 and 171,419.65 is: 236,560.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,377.11 : 424,182.23 = 171,419.65 : x
  2. Step 2: Convert to fraction form
    307,377.11/424,182.23 = 171,419.65/x
  3. Step 3: Cross multiply
    307,377.11x = 424,182.23 × 171,419.65
  4. Step 4: Simplify right side
    307,377.11x = 72,713,167,710.46
  5. Step 5: Solve for x
    x = 72,713,167,710.46/307,377.11
  6. Step 6: Final answer
    x = 236,560.13

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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.