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Finding the Fourth Proportional to 243,020.72, 364,590.24 and 80,914.34

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Solution

The fourth proportional to 243,020.72, 364,590.24 and 80,914.34 is: 121,391.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,020.72 : 364,590.24 = 80,914.34 : x
  2. Step 2: Convert to fraction form
    243,020.72/364,590.24 = 80,914.34/x
  3. Step 3: Cross multiply
    243,020.72x = 364,590.24 × 80,914.34
  4. Step 4: Simplify right side
    243,020.72x = 29,500,580,308.47
  5. Step 5: Solve for x
    x = 29,500,580,308.47/243,020.72
  6. Step 6: Final answer
    x = 121,391.21

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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.