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Finding the Fourth Proportional to 427,626.91, 641,427.13 and 203,148.91

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Solution

The fourth proportional to 427,626.91, 641,427.13 and 203,148.91 is: 304,717.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,626.91 : 641,427.13 = 203,148.91 : x
  2. Step 2: Convert to fraction form
    427,626.91/641,427.13 = 203,148.91/x
  3. Step 3: Cross multiply
    427,626.91x = 641,427.13 × 203,148.91
  4. Step 4: Simplify right side
    427,626.91x = 130,305,222,303.93
  5. Step 5: Solve for x
    x = 130,305,222,303.93/427,626.91
  6. Step 6: Final answer
    x = 304,717.08

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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.