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Finding the Fourth Proportional to 259,510.79, 389,127.44 and 133,099.45

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Solution

The fourth proportional to 259,510.79, 389,127.44 and 133,099.45 is: 199,578.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,510.79 : 389,127.44 = 133,099.45 : x
  2. Step 2: Convert to fraction form
    259,510.79/389,127.44 = 133,099.45/x
  3. Step 3: Cross multiply
    259,510.79x = 389,127.44 × 133,099.45
  4. Step 4: Simplify right side
    259,510.79x = 51,792,649,792.68
  5. Step 5: Solve for x
    x = 51,792,649,792.68/259,510.79
  6. Step 6: Final answer
    x = 199,578.02

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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.