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Finding the Fourth Proportional to 307,425.86, 424,445.13 and 192,861.57

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Solution

The fourth proportional to 307,425.86, 424,445.13 and 192,861.57 is: 266,272.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,425.86 : 424,445.13 = 192,861.57 : x
  2. Step 2: Convert to fraction form
    307,425.86/424,445.13 = 192,861.57/x
  3. Step 3: Cross multiply
    307,425.86x = 424,445.13 × 192,861.57
  4. Step 4: Simplify right side
    307,425.86x = 81,859,154,150.65
  5. Step 5: Solve for x
    x = 81,859,154,150.65/307,425.86
  6. Step 6: Final answer
    x = 266,272.83

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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.