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Finding the Fourth Proportional to 192,574.80, 288,859.80 and 87,320.40

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Solution

The fourth proportional to 192,574.80, 288,859.80 and 87,320.40 is: 130,979.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,574.80 : 288,859.80 = 87,320.40 : x
  2. Step 2: Convert to fraction form
    192,574.80/288,859.80 = 87,320.40/x
  3. Step 3: Cross multiply
    192,574.80x = 288,859.80 × 87,320.40
  4. Step 4: Simplify right side
    192,574.80x = 25,223,353,279.92
  5. Step 5: Solve for x
    x = 25,223,353,279.92/192,574.80
  6. Step 6: Final answer
    x = 130,979.51

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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.