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Finding the Fourth Proportional to 307,493.90, 424,180.22 and 250,197.20

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Solution

The fourth proportional to 307,493.90, 424,180.22 and 250,197.20 is: 345,140.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,493.90 : 424,180.22 = 250,197.20 : x
  2. Step 2: Convert to fraction form
    307,493.90/424,180.22 = 250,197.20/x
  3. Step 3: Cross multiply
    307,493.90x = 424,180.22 × 250,197.20
  4. Step 4: Simplify right side
    307,493.90x = 106,128,703,339.38
  5. Step 5: Solve for x
    x = 106,128,703,339.38/307,493.90
  6. Step 6: Final answer
    x = 345,140.84

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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.