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Finding the Fourth Proportional to 484,969.80, 727,109.10 and 218,512.20

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Solution

The fourth proportional to 484,969.80, 727,109.10 and 218,512.20 is: 327,612.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,969.80 : 727,109.10 = 218,512.20 : x
  2. Step 2: Convert to fraction form
    484,969.80/727,109.10 = 218,512.20/x
  3. Step 3: Cross multiply
    484,969.80x = 727,109.10 × 218,512.20
  4. Step 4: Simplify right side
    484,969.80x = 158,882,209,081.02
  5. Step 5: Solve for x
    x = 158,882,209,081.02/484,969.80
  6. Step 6: Final answer
    x = 327,612.58

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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.