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Finding the Fourth Proportional to 245,872.80, 368,809.20 and 219,607.20

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Solution

The fourth proportional to 245,872.80, 368,809.20 and 219,607.20 is: 329,410.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,872.80 : 368,809.20 = 219,607.20 : x
  2. Step 2: Convert to fraction form
    245,872.80/368,809.20 = 219,607.20/x
  3. Step 3: Cross multiply
    245,872.80x = 368,809.20 × 219,607.20
  4. Step 4: Simplify right side
    245,872.80x = 80,993,155,746.24
  5. Step 5: Solve for x
    x = 80,993,155,746.24/245,872.80
  6. Step 6: Final answer
    x = 329,410.80

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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.