Home / 287,837.20-397,216.20-158,772.56

Finding the Fourth Proportional to 287,837.20, 397,216.20 and 158,772.56

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Solution

The fourth proportional to 287,837.20, 397,216.20 and 158,772.56 is: 219,106.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,837.20 : 397,216.20 = 158,772.56 : x
  2. Step 2: Convert to fraction form
    287,837.20/397,216.20 = 158,772.56/x
  3. Step 3: Cross multiply
    287,837.20x = 397,216.20 × 158,772.56
  4. Step 4: Simplify right side
    287,837.20x = 63,067,032,947.47
  5. Step 5: Solve for x
    x = 63,067,032,947.47/287,837.20
  6. Step 6: Final answer
    x = 219,106.61

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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.