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Finding the Fourth Proportional to 307,493.70, 424,170.72 and 180,144.69

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Solution

The fourth proportional to 307,493.70, 424,170.72 and 180,144.69 is: 248,499.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,493.70 : 424,170.72 = 180,144.69 : x
  2. Step 2: Convert to fraction form
    307,493.70/424,170.72 = 180,144.69/x
  3. Step 3: Cross multiply
    307,493.70x = 424,170.72 × 180,144.69
  4. Step 4: Simplify right side
    307,493.70x = 76,412,102,861.48
  5. Step 5: Solve for x
    x = 76,412,102,861.48/307,493.70
  6. Step 6: Final answer
    x = 248,499.73

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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.