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Finding the Fourth Proportional to 343,354.70, 515,110.35 and 106,721.30

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Solution

The fourth proportional to 343,354.70, 515,110.35 and 106,721.30 is: 160,106.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,354.70 : 515,110.35 = 106,721.30 : x
  2. Step 2: Convert to fraction form
    343,354.70/515,110.35 = 106,721.30/x
  3. Step 3: Cross multiply
    343,354.70x = 515,110.35 × 106,721.30
  4. Step 4: Simplify right side
    343,354.70x = 54,973,246,195.46
  5. Step 5: Solve for x
    x = 54,973,246,195.46/343,354.70
  6. Step 6: Final answer
    x = 160,106.29

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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.