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Finding the Fourth Proportional to 403,532.40, 603,743.40 and 263,564.40

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Solution

The fourth proportional to 403,532.40, 603,743.40 and 263,564.40 is: 394,330.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,532.40 : 603,743.40 = 263,564.40 : x
  2. Step 2: Convert to fraction form
    403,532.40/603,743.40 = 263,564.40/x
  3. Step 3: Cross multiply
    403,532.40x = 603,743.40 × 263,564.40
  4. Step 4: Simplify right side
    403,532.40x = 159,125,266,974.96
  5. Step 5: Solve for x
    x = 159,125,266,974.96/403,532.40
  6. Step 6: Final answer
    x = 394,330.83

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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.