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Finding the Fourth Proportional to 273,894.10, 410,841.15 and 86,905.30

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Solution

The fourth proportional to 273,894.10, 410,841.15 and 86,905.30 is: 130,357.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,894.10 : 410,841.15 = 86,905.30 : x
  2. Step 2: Convert to fraction form
    273,894.10/410,841.15 = 86,905.30/x
  3. Step 3: Cross multiply
    273,894.10x = 410,841.15 × 86,905.30
  4. Step 4: Simplify right side
    273,894.10x = 35,704,273,393.10
  5. Step 5: Solve for x
    x = 35,704,273,393.10/273,894.10
  6. Step 6: Final answer
    x = 130,357.95

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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.