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Finding the Fourth Proportional to 255,463.16, 383,241.22 and 86,974.85

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Solution

The fourth proportional to 255,463.16, 383,241.22 and 86,974.85 is: 130,478.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,463.16 : 383,241.22 = 86,974.85 : x
  2. Step 2: Convert to fraction form
    255,463.16/383,241.22 = 86,974.85/x
  3. Step 3: Cross multiply
    255,463.16x = 383,241.22 × 86,974.85
  4. Step 4: Simplify right side
    255,463.16x = 33,332,348,363.98
  5. Step 5: Solve for x
    x = 33,332,348,363.98/255,463.16
  6. Step 6: Final answer
    x = 130,478.11

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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.