Home / 248,399.28-342,789.30-135,221.76

Finding the Fourth Proportional to 248,399.28, 342,789.30 and 135,221.76

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Solution

The fourth proportional to 248,399.28, 342,789.30 and 135,221.76 is: 186,605.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,399.28 : 342,789.30 = 135,221.76 : x
  2. Step 2: Convert to fraction form
    248,399.28/342,789.30 = 135,221.76/x
  3. Step 3: Cross multiply
    248,399.28x = 342,789.30 × 135,221.76
  4. Step 4: Simplify right side
    248,399.28x = 46,352,572,455.17
  5. Step 5: Solve for x
    x = 46,352,572,455.17/248,399.28
  6. Step 6: Final answer
    x = 186,605.10

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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.