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Finding the Fourth Proportional to 326,527.89, 489,699.09 and 126,805.65

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Solution

The fourth proportional to 326,527.89, 489,699.09 and 126,805.65 is: 190,172.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,527.89 : 489,699.09 = 126,805.65 : x
  2. Step 2: Convert to fraction form
    326,527.89/489,699.09 = 126,805.65/x
  3. Step 3: Cross multiply
    326,527.89x = 489,699.09 × 126,805.65
  4. Step 4: Simplify right side
    326,527.89x = 62,096,611,411.86
  5. Step 5: Solve for x
    x = 62,096,611,411.86/326,527.89
  6. Step 6: Final answer
    x = 190,172.46

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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.