Home / 279,891.18-386,235.25-159,015.69

Finding the Fourth Proportional to 279,891.18, 386,235.25 and 159,015.69

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Solution

The fourth proportional to 279,891.18, 386,235.25 and 159,015.69 is: 219,433.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,891.18 : 386,235.25 = 159,015.69 : x
  2. Step 2: Convert to fraction form
    279,891.18/386,235.25 = 159,015.69/x
  3. Step 3: Cross multiply
    279,891.18x = 386,235.25 × 159,015.69
  4. Step 4: Simplify right side
    279,891.18x = 61,417,464,781.07
  5. Step 5: Solve for x
    x = 61,417,464,781.07/279,891.18
  6. Step 6: Final answer
    x = 219,433.37

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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.