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Finding the Fourth Proportional to 273,782.20, 410,634.90 and 86,812.60

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Solution

The fourth proportional to 273,782.20, 410,634.90 and 86,812.60 is: 130,206.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,782.20 : 410,634.90 = 86,812.60 : x
  2. Step 2: Convert to fraction form
    273,782.20/410,634.90 = 86,812.60/x
  3. Step 3: Cross multiply
    273,782.20x = 410,634.90 × 86,812.60
  4. Step 4: Simplify right side
    273,782.20x = 35,648,283,319.74
  5. Step 5: Solve for x
    x = 35,648,283,319.74/273,782.20
  6. Step 6: Final answer
    x = 130,206.72

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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.