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Finding the Fourth Proportional to 583,105.20, 874,657.80 and 288,193.20

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Solution

The fourth proportional to 583,105.20, 874,657.80 and 288,193.20 is: 432,289.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,105.20 : 874,657.80 = 288,193.20 : x
  2. Step 2: Convert to fraction form
    583,105.20/874,657.80 = 288,193.20/x
  3. Step 3: Cross multiply
    583,105.20x = 874,657.80 × 288,193.20
  4. Step 4: Simplify right side
    583,105.20x = 252,070,430,286.96
  5. Step 5: Solve for x
    x = 252,070,430,286.96/583,105.20
  6. Step 6: Final answer
    x = 432,289.80

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.