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Finding the Fourth Proportional to 273,208.80, 410,120.40 and 211,154.40

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Solution

The fourth proportional to 273,208.80, 410,120.40 and 211,154.40 is: 316,969.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,208.80 : 410,120.40 = 211,154.40 : x
  2. Step 2: Convert to fraction form
    273,208.80/410,120.40 = 211,154.40/x
  3. Step 3: Cross multiply
    273,208.80x = 410,120.40 × 211,154.40
  4. Step 4: Simplify right side
    273,208.80x = 86,598,726,989.76
  5. Step 5: Solve for x
    x = 86,598,726,989.76/273,208.80
  6. Step 6: Final answer
    x = 316,969.03

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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.