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Finding the Fourth Proportional to 566,189.70, 781,335.82 and 321,219.73

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Solution

The fourth proportional to 566,189.70, 781,335.82 and 321,219.73 is: 443,279.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,189.70 : 781,335.82 = 321,219.73 : x
  2. Step 2: Convert to fraction form
    566,189.70/781,335.82 = 321,219.73/x
  3. Step 3: Cross multiply
    566,189.70x = 781,335.82 × 321,219.73
  4. Step 4: Simplify right side
    566,189.70x = 250,980,478,122.91
  5. Step 5: Solve for x
    x = 250,980,478,122.91/566,189.70
  6. Step 6: Final answer
    x = 443,279.84

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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.