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Finding the Fourth Proportional to 662,851.20, 994,276.80 and 219,619.20

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Solution

The fourth proportional to 662,851.20, 994,276.80 and 219,619.20 is: 329,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,851.20 : 994,276.80 = 219,619.20 : x
  2. Step 2: Convert to fraction form
    662,851.20/994,276.80 = 219,619.20/x
  3. Step 3: Cross multiply
    662,851.20x = 994,276.80 × 219,619.20
  4. Step 4: Simplify right side
    662,851.20x = 218,362,275,394.56
  5. Step 5: Solve for x
    x = 218,362,275,394.56/662,851.20
  6. Step 6: Final answer
    x = 329,428.80

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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.