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Finding the Fourth Proportional to 303,162.20, 454,744.80 and 78,506.88

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Solution

The fourth proportional to 303,162.20, 454,744.80 and 78,506.88 is: 117,760.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,162.20 : 454,744.80 = 78,506.88 : x
  2. Step 2: Convert to fraction form
    303,162.20/454,744.80 = 78,506.88/x
  3. Step 3: Cross multiply
    303,162.20x = 454,744.80 × 78,506.88
  4. Step 4: Simplify right side
    303,162.20x = 35,700,595,444.22
  5. Step 5: Solve for x
    x = 35,700,595,444.22/303,162.20
  6. Step 6: Final answer
    x = 117,760.71

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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.