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Finding the Fourth Proportional to 192,003.40, 288,350.70 and 139,472.20

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Solution

The fourth proportional to 192,003.40, 288,350.70 and 139,472.20 is: 209,459.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,003.40 : 288,350.70 = 139,472.20 : x
  2. Step 2: Convert to fraction form
    192,003.40/288,350.70 = 139,472.20/x
  3. Step 3: Cross multiply
    192,003.40x = 288,350.70 × 139,472.20
  4. Step 4: Simplify right side
    192,003.40x = 40,216,906,500.54
  5. Step 5: Solve for x
    x = 40,216,906,500.54/192,003.40
  6. Step 6: Final answer
    x = 209,459.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.