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Finding the Fourth Proportional to 379,881.60, 569,832 and 130,561.92

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Solution

The fourth proportional to 379,881.60, 569,832 and 130,561.92 is: 195,846.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,881.60 : 569,832 = 130,561.92 : x
  2. Step 2: Convert to fraction form
    379,881.60/569,832 = 130,561.92/x
  3. Step 3: Cross multiply
    379,881.60x = 569,832 × 130,561.92
  4. Step 4: Simplify right side
    379,881.60x = 74,398,359,997.44
  5. Step 5: Solve for x
    x = 74,398,359,997.44/379,881.60
  6. Step 6: Final answer
    x = 195,846.18

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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.