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Finding the Fourth Proportional to 385,594.96, 578,375.42 and 105,112.22

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Solution

The fourth proportional to 385,594.96, 578,375.42 and 105,112.22 is: 157,663.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,594.96 : 578,375.42 = 105,112.22 : x
  2. Step 2: Convert to fraction form
    385,594.96/578,375.42 = 105,112.22/x
  3. Step 3: Cross multiply
    385,594.96x = 578,375.42 × 105,112.22
  4. Step 4: Simplify right side
    385,594.96x = 60,794,324,389.63
  5. Step 5: Solve for x
    x = 60,794,324,389.63/385,594.96
  6. Step 6: Final answer
    x = 157,663.69

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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.