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Finding the Fourth Proportional to 535,065.20, 801,917.40 and 219,165.20

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Solution

The fourth proportional to 535,065.20, 801,917.40 and 219,165.20 is: 328,469.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,065.20 : 801,917.40 = 219,165.20 : x
  2. Step 2: Convert to fraction form
    535,065.20/801,917.40 = 219,165.20/x
  3. Step 3: Cross multiply
    535,065.20x = 801,917.40 × 219,165.20
  4. Step 4: Simplify right side
    535,065.20x = 175,752,387,354.48
  5. Step 5: Solve for x
    x = 175,752,387,354.48/535,065.20
  6. Step 6: Final answer
    x = 328,469.10

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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.