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Finding the Fourth Proportional to 263,616.95, 395,159.16 and 103,805.03

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Solution

The fourth proportional to 263,616.95, 395,159.16 and 103,805.03 is: 155,602.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,616.95 : 395,159.16 = 103,805.03 : x
  2. Step 2: Convert to fraction form
    263,616.95/395,159.16 = 103,805.03/x
  3. Step 3: Cross multiply
    263,616.95x = 395,159.16 × 103,805.03
  4. Step 4: Simplify right side
    263,616.95x = 41,019,508,458.57
  5. Step 5: Solve for x
    x = 41,019,508,458.57/263,616.95
  6. Step 6: Final answer
    x = 155,602.70

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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.