Home / 218,710.38-301,826.69-128,057.88

Finding the Fourth Proportional to 218,710.38, 301,826.69 and 128,057.88

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Solution

The fourth proportional to 218,710.38, 301,826.69 and 128,057.88 is: 176,723.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,710.38 : 301,826.69 = 128,057.88 : x
  2. Step 2: Convert to fraction form
    218,710.38/301,826.69 = 128,057.88/x
  3. Step 3: Cross multiply
    218,710.38x = 301,826.69 × 128,057.88
  4. Step 4: Simplify right side
    218,710.38x = 38,651,286,048.82
  5. Step 5: Solve for x
    x = 38,651,286,048.82/218,710.38
  6. Step 6: Final answer
    x = 176,723.60

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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.