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Finding the Fourth Proportional to 343,377.60, 515,174.40 and 165,890.40

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Solution

The fourth proportional to 343,377.60, 515,174.40 and 165,890.40 is: 248,887.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,377.60 : 515,174.40 = 165,890.40 : x
  2. Step 2: Convert to fraction form
    343,377.60/515,174.40 = 165,890.40/x
  3. Step 3: Cross multiply
    343,377.60x = 515,174.40 × 165,890.40
  4. Step 4: Simplify right side
    343,377.60x = 85,462,487,285.76
  5. Step 5: Solve for x
    x = 85,462,487,285.76/343,377.60
  6. Step 6: Final answer
    x = 248,887.78

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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.