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Finding the Fourth Proportional to 290,297.92, 435,474.42 and 112,818.64

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Solution

The fourth proportional to 290,297.92, 435,474.42 and 112,818.64 is: 169,238.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,297.92 : 435,474.42 = 112,818.64 : x
  2. Step 2: Convert to fraction form
    290,297.92/435,474.42 = 112,818.64/x
  3. Step 3: Cross multiply
    290,297.92x = 435,474.42 × 112,818.64
  4. Step 4: Simplify right side
    290,297.92x = 49,129,631,819.19
  5. Step 5: Solve for x
    x = 49,129,631,819.19/290,297.92
  6. Step 6: Final answer
    x = 169,238.66

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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.