Home / 283,406.12-391,100.75-154,344.79

Finding the Fourth Proportional to 283,406.12, 391,100.75 and 154,344.79

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Solution

The fourth proportional to 283,406.12, 391,100.75 and 154,344.79 is: 212,995.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,406.12 : 391,100.75 = 154,344.79 : x
  2. Step 2: Convert to fraction form
    283,406.12/391,100.75 = 154,344.79/x
  3. Step 3: Cross multiply
    283,406.12x = 391,100.75 × 154,344.79
  4. Step 4: Simplify right side
    283,406.12x = 60,364,364,291.73
  5. Step 5: Solve for x
    x = 60,364,364,291.73/283,406.12
  6. Step 6: Final answer
    x = 212,995.98

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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.