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Finding the Fourth Proportional to 245,892.80, 368,839.20 and 219,627.20

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Solution

The fourth proportional to 245,892.80, 368,839.20 and 219,627.20 is: 329,440.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,892.80 : 368,839.20 = 219,627.20 : x
  2. Step 2: Convert to fraction form
    245,892.80/368,839.20 = 219,627.20/x
  3. Step 3: Cross multiply
    245,892.80x = 368,839.20 × 219,627.20
  4. Step 4: Simplify right side
    245,892.80x = 81,007,120,746.24
  5. Step 5: Solve for x
    x = 81,007,120,746.24/245,892.80
  6. Step 6: Final answer
    x = 329,440.80

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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.