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Finding the Fourth Proportional to 518,966.18, 778,554.35 and 219,446.27

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Solution

The fourth proportional to 518,966.18, 778,554.35 and 219,446.27 is: 329,213.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,966.18 : 778,554.35 = 219,446.27 : x
  2. Step 2: Convert to fraction form
    518,966.18/778,554.35 = 219,446.27/x
  3. Step 3: Cross multiply
    518,966.18x = 778,554.35 × 219,446.27
  4. Step 4: Simplify right side
    518,966.18x = 170,850,843,109.77
  5. Step 5: Solve for x
    x = 170,850,843,109.77/518,966.18
  6. Step 6: Final answer
    x = 329,213.83

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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.