Home / 321,009.12-442,953.36-177,761.28

Finding the Fourth Proportional to 321,009.12, 442,953.36 and 177,761.28

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Solution

The fourth proportional to 321,009.12, 442,953.36 and 177,761.28 is: 245,288.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,009.12 : 442,953.36 = 177,761.28 : x
  2. Step 2: Convert to fraction form
    321,009.12/442,953.36 = 177,761.28/x
  3. Step 3: Cross multiply
    321,009.12x = 442,953.36 × 177,761.28
  4. Step 4: Simplify right side
    321,009.12x = 78,739,956,253.90
  5. Step 5: Solve for x
    x = 78,739,956,253.90/321,009.12
  6. Step 6: Final answer
    x = 245,288.84

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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.