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Finding the Fourth Proportional to 265,339.40, 398,061.62 and 75,801.40

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Solution

The fourth proportional to 265,339.40, 398,061.62 and 75,801.40 is: 113,717.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,339.40 : 398,061.62 = 75,801.40 : x
  2. Step 2: Convert to fraction form
    265,339.40/398,061.62 = 75,801.40/x
  3. Step 3: Cross multiply
    265,339.40x = 398,061.62 × 75,801.40
  4. Step 4: Simplify right side
    265,339.40x = 30,173,625,712.95
  5. Step 5: Solve for x
    x = 30,173,625,712.95/265,339.40
  6. Step 6: Final answer
    x = 113,717.09

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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.