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Finding the Fourth Proportional to 307,350.45, 424,132.47 and 178,291.49

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Solution

The fourth proportional to 307,350.45, 424,132.47 and 178,291.49 is: 246,035.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,350.45 : 424,132.47 = 178,291.49 : x
  2. Step 2: Convert to fraction form
    307,350.45/424,132.47 = 178,291.49/x
  3. Step 3: Cross multiply
    307,350.45x = 424,132.47 × 178,291.49
  4. Step 4: Simplify right side
    307,350.45x = 75,619,207,913.02
  5. Step 5: Solve for x
    x = 75,619,207,913.02/307,350.45
  6. Step 6: Final answer
    x = 246,035.78

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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.