Home / 253,439.13-380,011.07-111,278.73

Finding the Fourth Proportional to 253,439.13, 380,011.07 and 111,278.73

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Solution

The fourth proportional to 253,439.13, 380,011.07 and 111,278.73 is: 166,853.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,439.13 : 380,011.07 = 111,278.73 : x
  2. Step 2: Convert to fraction form
    253,439.13/380,011.07 = 111,278.73/x
  3. Step 3: Cross multiply
    253,439.13x = 380,011.07 × 111,278.73
  4. Step 4: Simplify right side
    253,439.13x = 42,287,146,799.09
  5. Step 5: Solve for x
    x = 42,287,146,799.09/253,439.13
  6. Step 6: Final answer
    x = 166,853.27

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1.5x scale

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.