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Finding the Fourth Proportional to 307,491.90, 424,177.47 and 250,195.20

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Solution

The fourth proportional to 307,491.90, 424,177.47 and 250,195.20 is: 345,138.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,491.90 : 424,177.47 = 250,195.20 : x
  2. Step 2: Convert to fraction form
    307,491.90/424,177.47 = 250,195.20/x
  3. Step 3: Cross multiply
    307,491.90x = 424,177.47 × 250,195.20
  4. Step 4: Simplify right side
    307,491.90x = 106,127,166,942.14
  5. Step 5: Solve for x
    x = 106,127,166,942.14/307,491.90
  6. Step 6: Final answer
    x = 345,138.09

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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.