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Finding the Fourth Proportional to 265,911.30, 399,084.55 and 263,837.70

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Solution

The fourth proportional to 265,911.30, 399,084.55 and 263,837.70 is: 395,972.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,911.30 : 399,084.55 = 263,837.70 : x
  2. Step 2: Convert to fraction form
    265,911.30/399,084.55 = 263,837.70/x
  3. Step 3: Cross multiply
    265,911.30x = 399,084.55 × 263,837.70
  4. Step 4: Simplify right side
    265,911.30x = 105,293,549,777.54
  5. Step 5: Solve for x
    x = 105,293,549,777.54/265,911.30
  6. Step 6: Final answer
    x = 395,972.45

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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.