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Finding the Fourth Proportional to 283,523.70, 425,285.55 and 257,279.70

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Solution

The fourth proportional to 283,523.70, 425,285.55 and 257,279.70 is: 385,919.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,523.70 : 425,285.55 = 257,279.70 : x
  2. Step 2: Convert to fraction form
    283,523.70/425,285.55 = 257,279.70/x
  3. Step 3: Cross multiply
    283,523.70x = 425,285.55 × 257,279.70
  4. Step 4: Simplify right side
    283,523.70x = 109,417,338,718.34
  5. Step 5: Solve for x
    x = 109,417,338,718.34/283,523.70
  6. Step 6: Final answer
    x = 385,919.55

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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.