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Finding the Fourth Proportional to 192,356.20, 288,534.30 and 103,782.70

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Solution

The fourth proportional to 192,356.20, 288,534.30 and 103,782.70 is: 155,674.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,356.20 : 288,534.30 = 103,782.70 : x
  2. Step 2: Convert to fraction form
    192,356.20/288,534.30 = 103,782.70/x
  3. Step 3: Cross multiply
    192,356.20x = 288,534.30 × 103,782.70
  4. Step 4: Simplify right side
    192,356.20x = 29,944,868,696.61
  5. Step 5: Solve for x
    x = 29,944,868,696.61/192,356.20
  6. Step 6: Final answer
    x = 155,674.05

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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.