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Finding the Fourth Proportional to 489,021.16, 733,382.28 and 338,188

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Solution

The fourth proportional to 489,021.16, 733,382.28 and 338,188 is: 507,178.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,021.16 : 733,382.28 = 338,188 : x
  2. Step 2: Convert to fraction form
    489,021.16/733,382.28 = 338,188/x
  3. Step 3: Cross multiply
    489,021.16x = 733,382.28 × 338,188
  4. Step 4: Simplify right side
    489,021.16x = 248,021,086,508.64
  5. Step 5: Solve for x
    x = 248,021,086,508.64/489,021.16
  6. Step 6: Final answer
    x = 507,178.64

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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.