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Finding the Fourth Proportional to 379,408.62, 569,340.74 and 151,663.56

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Solution

The fourth proportional to 379,408.62, 569,340.74 and 151,663.56 is: 227,586.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,408.62 : 569,340.74 = 151,663.56 : x
  2. Step 2: Convert to fraction form
    379,408.62/569,340.74 = 151,663.56/x
  3. Step 3: Cross multiply
    379,408.62x = 569,340.74 × 151,663.56
  4. Step 4: Simplify right side
    379,408.62x = 86,348,241,725.57
  5. Step 5: Solve for x
    x = 86,348,241,725.57/379,408.62
  6. Step 6: Final answer
    x = 227,586.40

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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.