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Finding the Fourth Proportional to 547,447.27, 755,423.26 and 305,724.67

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Solution

The fourth proportional to 547,447.27, 755,423.26 and 305,724.67 is: 421,869.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,447.27 : 755,423.26 = 305,724.67 : x
  2. Step 2: Convert to fraction form
    547,447.27/755,423.26 = 305,724.67/x
  3. Step 3: Cross multiply
    547,447.27x = 755,423.26 × 305,724.67
  4. Step 4: Simplify right side
    547,447.27x = 230,951,526,873.82
  5. Step 5: Solve for x
    x = 230,951,526,873.82/547,447.27
  6. Step 6: Final answer
    x = 421,869.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.