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Finding the Fourth Proportional to 300,378.28, 450,502.14 and 89,959.72

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Solution

The fourth proportional to 300,378.28, 450,502.14 and 89,959.72 is: 134,920.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,378.28 : 450,502.14 = 89,959.72 : x
  2. Step 2: Convert to fraction form
    300,378.28/450,502.14 = 89,959.72/x
  3. Step 3: Cross multiply
    300,378.28x = 450,502.14 × 89,959.72
  4. Step 4: Simplify right side
    300,378.28x = 40,527,046,373.80
  5. Step 5: Solve for x
    x = 40,527,046,373.80/300,378.28
  6. Step 6: Final answer
    x = 134,920.03

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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.