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Finding the Fourth Proportional to 485,522.40, 728,110.80 and 219,410.40

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Solution

The fourth proportional to 485,522.40, 728,110.80 and 219,410.40 is: 329,037.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,522.40 : 728,110.80 = 219,410.40 : x
  2. Step 2: Convert to fraction form
    485,522.40/728,110.80 = 219,410.40/x
  3. Step 3: Cross multiply
    485,522.40x = 728,110.80 × 219,410.40
  4. Step 4: Simplify right side
    485,522.40x = 159,755,081,872.32
  5. Step 5: Solve for x
    x = 159,755,081,872.32/485,522.40
  6. Step 6: Final answer
    x = 329,037.51

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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.