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Finding the Fourth Proportional to 283,612.83, 391,380.64 and 154,552.43

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Solution

The fourth proportional to 283,612.83, 391,380.64 and 154,552.43 is: 213,279.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,612.83 : 391,380.64 = 154,552.43 : x
  2. Step 2: Convert to fraction form
    283,612.83/391,380.64 = 154,552.43/x
  3. Step 3: Cross multiply
    283,612.83x = 391,380.64 × 154,552.43
  4. Step 4: Simplify right side
    283,612.83x = 60,488,826,623.67
  5. Step 5: Solve for x
    x = 60,488,826,623.67/283,612.83
  6. Step 6: Final answer
    x = 213,279.58

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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.