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Finding the Fourth Proportional to 326,084.80, 489,127.20 and 231,606.40

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Solution

The fourth proportional to 326,084.80, 489,127.20 and 231,606.40 is: 347,409.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,084.80 : 489,127.20 = 231,606.40 : x
  2. Step 2: Convert to fraction form
    326,084.80/489,127.20 = 231,606.40/x
  3. Step 3: Cross multiply
    326,084.80x = 489,127.20 × 231,606.40
  4. Step 4: Simplify right side
    326,084.80x = 113,284,989,934.08
  5. Step 5: Solve for x
    x = 113,284,989,934.08/326,084.80
  6. Step 6: Final answer
    x = 347,409.60

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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.