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Finding the Fourth Proportional to 508,279.76, 701,421 and 281,919.44

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Solution

The fourth proportional to 508,279.76, 701,421 and 281,919.44 is: 389,046.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,279.76 : 701,421 = 281,919.44 : x
  2. Step 2: Convert to fraction form
    508,279.76/701,421 = 281,919.44/x
  3. Step 3: Cross multiply
    508,279.76x = 701,421 × 281,919.44
  4. Step 4: Simplify right side
    508,279.76x = 197,744,215,524.24
  5. Step 5: Solve for x
    x = 197,744,215,524.24/508,279.76
  6. Step 6: Final answer
    x = 389,046.02

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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.