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Finding the Fourth Proportional to 283,615.20, 391,381.20 and 154,550.88

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Solution

The fourth proportional to 283,615.20, 391,381.20 and 154,550.88 is: 213,275.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,615.20 : 391,381.20 = 154,550.88 : x
  2. Step 2: Convert to fraction form
    283,615.20/391,381.20 = 154,550.88/x
  3. Step 3: Cross multiply
    283,615.20x = 391,381.20 × 154,550.88
  4. Step 4: Simplify right side
    283,615.20x = 60,488,308,875.46
  5. Step 5: Solve for x
    x = 60,488,308,875.46/283,615.20
  6. Step 6: Final answer
    x = 213,275.98

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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.