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Finding the Fourth Proportional to 379,796.16, 569,693.52 and 143,191.92

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Solution

The fourth proportional to 379,796.16, 569,693.52 and 143,191.92 is: 214,787.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,796.16 : 569,693.52 = 143,191.92 : x
  2. Step 2: Convert to fraction form
    379,796.16/569,693.52 = 143,191.92/x
  3. Step 3: Cross multiply
    379,796.16x = 569,693.52 × 143,191.92
  4. Step 4: Simplify right side
    379,796.16x = 81,575,508,940.36
  5. Step 5: Solve for x
    x = 81,575,508,940.36/379,796.16
  6. Step 6: Final answer
    x = 214,787.61

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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.