Home / 265,764.03-398,686.20-85,789.32

Finding the Fourth Proportional to 265,764.03, 398,686.20 and 85,789.32

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Solution

The fourth proportional to 265,764.03, 398,686.20 and 85,789.32 is: 128,696.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,764.03 : 398,686.20 = 85,789.32 : x
  2. Step 2: Convert to fraction form
    265,764.03/398,686.20 = 85,789.32/x
  3. Step 3: Cross multiply
    265,764.03x = 398,686.20 × 85,789.32
  4. Step 4: Simplify right side
    265,764.03x = 34,203,017,991.38
  5. Step 5: Solve for x
    x = 34,203,017,991.38/265,764.03
  6. Step 6: Final answer
    x = 128,696.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.