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Finding the Fourth Proportional to 425,854.93, 638,782.67 and 238,997.65

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Solution

The fourth proportional to 425,854.93, 638,782.67 and 238,997.65 is: 358,496.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,854.93 : 638,782.67 = 238,997.65 : x
  2. Step 2: Convert to fraction form
    425,854.93/638,782.67 = 238,997.65/x
  3. Step 3: Cross multiply
    425,854.93x = 638,782.67 × 238,997.65
  4. Step 4: Simplify right side
    425,854.93x = 152,667,556,990.73
  5. Step 5: Solve for x
    x = 152,667,556,990.73/425,854.93
  6. Step 6: Final answer
    x = 358,496.63

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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.