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Finding the Fourth Proportional to 307,462.70, 424,280.25 and 178,391.18

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Solution

The fourth proportional to 307,462.70, 424,280.25 and 178,391.18 is: 246,169.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,462.70 : 424,280.25 = 178,391.18 : x
  2. Step 2: Convert to fraction form
    307,462.70/424,280.25 = 178,391.18/x
  3. Step 3: Cross multiply
    307,462.70x = 424,280.25 × 178,391.18
  4. Step 4: Simplify right side
    307,462.70x = 75,687,854,448.20
  5. Step 5: Solve for x
    x = 75,687,854,448.20/307,462.70
  6. Step 6: Final answer
    x = 246,169.22

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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.