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Finding the Fourth Proportional to 307,472.99, 424,323.24 and 178,401.72

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Solution

The fourth proportional to 307,472.99, 424,323.24 and 178,401.72 is: 246,200.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,472.99 : 424,323.24 = 178,401.72 : x
  2. Step 2: Convert to fraction form
    307,472.99/424,323.24 = 178,401.72/x
  3. Step 3: Cross multiply
    307,472.99x = 424,323.24 × 178,401.72
  4. Step 4: Simplify right side
    307,472.99x = 75,699,995,851.97
  5. Step 5: Solve for x
    x = 75,699,995,851.97/307,472.99
  6. Step 6: Final answer
    x = 246,200.47

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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.