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Finding the Fourth Proportional to 326,084.30, 489,126.45 and 231,605.90

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Solution

The fourth proportional to 326,084.30, 489,126.45 and 231,605.90 is: 347,408.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,084.30 : 489,126.45 = 231,605.90 : x
  2. Step 2: Convert to fraction form
    326,084.30/489,126.45 = 231,605.90/x
  3. Step 3: Cross multiply
    326,084.30x = 489,126.45 × 231,605.90
  4. Step 4: Simplify right side
    326,084.30x = 113,284,571,666.06
  5. Step 5: Solve for x
    x = 113,284,571,666.06/326,084.30
  6. Step 6: Final answer
    x = 347,408.85

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1.5x scale

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.