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Finding the Fourth Proportional to 326,528.89, 489,700.59 and 126,806.65

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Solution

The fourth proportional to 326,528.89, 489,700.59 and 126,806.65 is: 190,173.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,528.89 : 489,700.59 = 126,806.65 : x
  2. Step 2: Convert to fraction form
    326,528.89/489,700.59 = 126,806.65/x
  3. Step 3: Cross multiply
    326,528.89x = 489,700.59 × 126,806.65
  4. Step 4: Simplify right side
    326,528.89x = 62,097,291,320.92
  5. Step 5: Solve for x
    x = 62,097,291,320.92/326,528.89
  6. Step 6: Final answer
    x = 190,173.96

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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.