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Finding the Fourth Proportional to 484,972.80, 727,113.60 and 218,515.20

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Solution

The fourth proportional to 484,972.80, 727,113.60 and 218,515.20 is: 327,617.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,972.80 : 727,113.60 = 218,515.20 : x
  2. Step 2: Convert to fraction form
    484,972.80/727,113.60 = 218,515.20/x
  3. Step 3: Cross multiply
    484,972.80x = 727,113.60 × 218,515.20
  4. Step 4: Simplify right side
    484,972.80x = 158,885,373,726.72
  5. Step 5: Solve for x
    x = 158,885,373,726.72/484,972.80
  6. Step 6: Final answer
    x = 327,617.08

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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.