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Finding the Fourth Proportional to 192,359.70, 288,539.55 and 103,786.20

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Solution

The fourth proportional to 192,359.70, 288,539.55 and 103,786.20 is: 155,679.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,359.70 : 288,539.55 = 103,786.20 : x
  2. Step 2: Convert to fraction form
    192,359.70/288,539.55 = 103,786.20/x
  3. Step 3: Cross multiply
    192,359.70x = 288,539.55 × 103,786.20
  4. Step 4: Simplify right side
    192,359.70x = 29,946,423,444.21
  5. Step 5: Solve for x
    x = 29,946,423,444.21/192,359.70
  6. Step 6: Final answer
    x = 155,679.30

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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.