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Finding the Fourth Proportional to 283,612.42, 425,392.71 and 86,620.42

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Solution

The fourth proportional to 283,612.42, 425,392.71 and 86,620.42 is: 129,922.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,612.42 : 425,392.71 = 86,620.42 : x
  2. Step 2: Convert to fraction form
    283,612.42/425,392.71 = 86,620.42/x
  3. Step 3: Cross multiply
    283,612.42x = 425,392.71 × 86,620.42
  4. Step 4: Simplify right side
    283,612.42x = 36,847,695,205.14
  5. Step 5: Solve for x
    x = 36,847,695,205.14/283,612.42
  6. Step 6: Final answer
    x = 129,922.71

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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.