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Finding the Fourth Proportional to 424,788.87, 637,204.31 and 121,227.77

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Solution

The fourth proportional to 424,788.87, 637,204.31 and 121,227.77 is: 181,847.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,788.87 : 637,204.31 = 121,227.77 : x
  2. Step 2: Convert to fraction form
    424,788.87/637,204.31 = 121,227.77/x
  3. Step 3: Cross multiply
    424,788.87x = 637,204.31 × 121,227.77
  4. Step 4: Simplify right side
    424,788.87x = 77,246,855,336.54
  5. Step 5: Solve for x
    x = 77,246,855,336.54/424,788.87
  6. Step 6: Final answer
    x = 181,847.64

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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.