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Finding the Fourth Proportional to 326,489.46, 489,504.48 and 126,641.40

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Solution

The fourth proportional to 326,489.46, 489,504.48 and 126,641.40 is: 189,873.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,489.46 : 489,504.48 = 126,641.40 : x
  2. Step 2: Convert to fraction form
    326,489.46/489,504.48 = 126,641.40/x
  3. Step 3: Cross multiply
    326,489.46x = 489,504.48 × 126,641.40
  4. Step 4: Simplify right side
    326,489.46x = 61,991,532,653.47
  5. Step 5: Solve for x
    x = 61,991,532,653.47/326,489.46
  6. Step 6: Final answer
    x = 189,873.00

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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.