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Finding the Fourth Proportional to 547,445.27, 755,420.50 and 305,722.67

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Solution

The fourth proportional to 547,445.27, 755,420.50 and 305,722.67 is: 421,867.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,445.27 : 755,420.50 = 305,722.67 : x
  2. Step 2: Convert to fraction form
    547,445.27/755,420.50 = 305,722.67/x
  3. Step 3: Cross multiply
    547,445.27x = 755,420.50 × 305,722.67
  4. Step 4: Simplify right side
    547,445.27x = 230,949,167,691.33
  5. Step 5: Solve for x
    x = 230,949,167,691.33/547,445.27
  6. Step 6: Final answer
    x = 421,867.13

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Double scale
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Similar ratio
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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.