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Finding the Fourth Proportional to 265,360.20, 398,040.30 and 115,672.20

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Solution

The fourth proportional to 265,360.20, 398,040.30 and 115,672.20 is: 173,508.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,360.20 : 398,040.30 = 115,672.20 : x
  2. Step 2: Convert to fraction form
    265,360.20/398,040.30 = 115,672.20/x
  3. Step 3: Cross multiply
    265,360.20x = 398,040.30 × 115,672.20
  4. Step 4: Simplify right side
    265,360.20x = 46,042,197,189.66
  5. Step 5: Solve for x
    x = 46,042,197,189.66/265,360.20
  6. Step 6: Final answer
    x = 173,508.30

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1.5x scale

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.