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Finding the Fourth Proportional to 423,567.11, 635,350.88 and 265,906.28

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Solution

The fourth proportional to 423,567.11, 635,350.88 and 265,906.28 is: 398,859.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,567.11 : 635,350.88 = 265,906.28 : x
  2. Step 2: Convert to fraction form
    423,567.11/635,350.88 = 265,906.28/x
  3. Step 3: Cross multiply
    423,567.11x = 635,350.88 × 265,906.28
  4. Step 4: Simplify right side
    423,567.11x = 168,943,786,483.54
  5. Step 5: Solve for x
    x = 168,943,786,483.54/423,567.11
  6. Step 6: Final answer
    x = 398,859.55

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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.