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Finding the Fourth Proportional to 227,809.90, 342,006.45 and 121,278.70

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Solution

The fourth proportional to 227,809.90, 342,006.45 and 121,278.70 is: 182,073.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,809.90 : 342,006.45 = 121,278.70 : x
  2. Step 2: Convert to fraction form
    227,809.90/342,006.45 = 121,278.70/x
  3. Step 3: Cross multiply
    227,809.90x = 342,006.45 × 121,278.70
  4. Step 4: Simplify right side
    227,809.90x = 41,478,097,647.62
  5. Step 5: Solve for x
    x = 41,478,097,647.62/227,809.90
  6. Step 6: Final answer
    x = 182,073.29

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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.