Home / 399,269.56-550,335.38-283,021.96

Finding the Fourth Proportional to 399,269.56, 550,335.38 and 283,021.96

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Solution

The fourth proportional to 399,269.56, 550,335.38 and 283,021.96 is: 390,104.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,269.56 : 550,335.38 = 283,021.96 : x
  2. Step 2: Convert to fraction form
    399,269.56/550,335.38 = 283,021.96/x
  3. Step 3: Cross multiply
    399,269.56x = 550,335.38 × 283,021.96
  4. Step 4: Simplify right side
    399,269.56x = 155,756,997,904.95
  5. Step 5: Solve for x
    x = 155,756,997,904.95/399,269.56
  6. Step 6: Final answer
    x = 390,104.87

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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.