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Finding the Fourth Proportional to 484,968.80, 727,107.60 and 218,511.20

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Solution

The fourth proportional to 484,968.80, 727,107.60 and 218,511.20 is: 327,611.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,968.80 : 727,107.60 = 218,511.20 : x
  2. Step 2: Convert to fraction form
    484,968.80/727,107.60 = 218,511.20/x
  3. Step 3: Cross multiply
    484,968.80x = 727,107.60 × 218,511.20
  4. Step 4: Simplify right side
    484,968.80x = 158,881,154,205.12
  5. Step 5: Solve for x
    x = 158,881,154,205.12/484,968.80
  6. Step 6: Final answer
    x = 327,611.08

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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.