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Finding the Fourth Proportional to 378,744.76, 568,019.31 and 112,445.02

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Solution

The fourth proportional to 378,744.76, 568,019.31 and 112,445.02 is: 168,638.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,744.76 : 568,019.31 = 112,445.02 : x
  2. Step 2: Convert to fraction form
    378,744.76/568,019.31 = 112,445.02/x
  3. Step 3: Cross multiply
    378,744.76x = 568,019.31 × 112,445.02
  4. Step 4: Simplify right side
    378,744.76x = 63,870,942,673.34
  5. Step 5: Solve for x
    x = 63,870,942,673.34/378,744.76
  6. Step 6: Final answer
    x = 168,638.49

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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.