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Finding the Fourth Proportional to 234,486.20, 351,804.64 and 76,678.76

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Solution

The fourth proportional to 234,486.20, 351,804.64 and 76,678.76 is: 115,042.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,486.20 : 351,804.64 = 76,678.76 : x
  2. Step 2: Convert to fraction form
    234,486.20/351,804.64 = 76,678.76/x
  3. Step 3: Cross multiply
    234,486.20x = 351,804.64 × 76,678.76
  4. Step 4: Simplify right side
    234,486.20x = 26,975,943,557.45
  5. Step 5: Solve for x
    x = 26,975,943,557.45/234,486.20
  6. Step 6: Final answer
    x = 115,042.78

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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.