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Finding the Fourth Proportional to 326,915.10, 489,459.02 and 176,616.90

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Solution

The fourth proportional to 326,915.10, 489,459.02 and 176,616.90 is: 264,431.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,915.10 : 489,459.02 = 176,616.90 : x
  2. Step 2: Convert to fraction form
    326,915.10/489,459.02 = 176,616.90/x
  3. Step 3: Cross multiply
    326,915.10x = 489,459.02 × 176,616.90
  4. Step 4: Simplify right side
    326,915.10x = 86,446,734,789.44
  5. Step 5: Solve for x
    x = 86,446,734,789.44/326,915.10
  6. Step 6: Final answer
    x = 264,431.76

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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.