Home / 287,521.38-396,782.20-158,464.59

Finding the Fourth Proportional to 287,521.38, 396,782.20 and 158,464.59

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Solution

The fourth proportional to 287,521.38, 396,782.20 and 158,464.59 is: 218,682.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,521.38 : 396,782.20 = 158,464.59 : x
  2. Step 2: Convert to fraction form
    287,521.38/396,782.20 = 158,464.59/x
  3. Step 3: Cross multiply
    287,521.38x = 396,782.20 × 158,464.59
  4. Step 4: Simplify right side
    287,521.38x = 62,875,928,642.30
  5. Step 5: Solve for x
    x = 62,875,928,642.30/287,521.38
  6. Step 6: Final answer
    x = 218,682.62

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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.