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Finding the Fourth Proportional to 234,648.78, 352,038.78 and 76,987.94

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Solution

The fourth proportional to 234,648.78, 352,038.78 and 76,987.94 is: 115,503.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,648.78 : 352,038.78 = 76,987.94 : x
  2. Step 2: Convert to fraction form
    234,648.78/352,038.78 = 76,987.94/x
  3. Step 3: Cross multiply
    234,648.78x = 352,038.78 × 76,987.94
  4. Step 4: Simplify right side
    234,648.78x = 27,102,740,472.31
  5. Step 5: Solve for x
    x = 27,102,740,472.31/234,648.78
  6. Step 6: Final answer
    x = 115,503.44

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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.