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Finding the Fourth Proportional to 300,515.40, 451,023.39 and 158,411.70

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Solution

The fourth proportional to 300,515.40, 451,023.39 and 158,411.70 is: 237,749.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,515.40 : 451,023.39 = 158,411.70 : x
  2. Step 2: Convert to fraction form
    300,515.40/451,023.39 = 158,411.70/x
  3. Step 3: Cross multiply
    300,515.40x = 451,023.39 × 158,411.70
  4. Step 4: Simplify right side
    300,515.40x = 71,447,381,949.66
  5. Step 5: Solve for x
    x = 71,447,381,949.66/300,515.40
  6. Step 6: Final answer
    x = 237,749.49

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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.