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Finding the Fourth Proportional to 326,099.40, 489,124.80 and 136,510.80

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Solution

The fourth proportional to 326,099.40, 489,124.80 and 136,510.80 is: 204,756.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,099.40 : 489,124.80 = 136,510.80 : x
  2. Step 2: Convert to fraction form
    326,099.40/489,124.80 = 136,510.80/x
  3. Step 3: Cross multiply
    326,099.40x = 489,124.80 × 136,510.80
  4. Step 4: Simplify right side
    326,099.40x = 66,770,817,747.84
  5. Step 5: Solve for x
    x = 66,770,817,747.84/326,099.40
  6. Step 6: Final answer
    x = 204,756.03

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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.