Home / 257,111.20-385,666.80-107,301.70

Finding the Fourth Proportional to 257,111.20, 385,666.80 and 107,301.70

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Solution

The fourth proportional to 257,111.20, 385,666.80 and 107,301.70 is: 160,952.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,111.20 : 385,666.80 = 107,301.70 : x
  2. Step 2: Convert to fraction form
    257,111.20/385,666.80 = 107,301.70/x
  3. Step 3: Cross multiply
    257,111.20x = 385,666.80 × 107,301.70
  4. Step 4: Simplify right side
    257,111.20x = 41,382,703,273.56
  5. Step 5: Solve for x
    x = 41,382,703,273.56/257,111.20
  6. Step 6: Final answer
    x = 160,952.55

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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.