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Finding the Fourth Proportional to 192,410.80, 288,616.20 and 139,266.70

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Solution

The fourth proportional to 192,410.80, 288,616.20 and 139,266.70 is: 208,900.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,410.80 : 288,616.20 = 139,266.70 : x
  2. Step 2: Convert to fraction form
    192,410.80/288,616.20 = 139,266.70/x
  3. Step 3: Cross multiply
    192,410.80x = 288,616.20 × 139,266.70
  4. Step 4: Simplify right side
    192,410.80x = 40,194,625,740.54
  5. Step 5: Solve for x
    x = 40,194,625,740.54/192,410.80
  6. Step 6: Final answer
    x = 208,900.05

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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.