Home / 392,639.09-589,024.23-140,065.19

Finding the Fourth Proportional to 392,639.09, 589,024.23 and 140,065.19

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Solution

The fourth proportional to 392,639.09, 589,024.23 and 140,065.19 is: 210,121.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,639.09 : 589,024.23 = 140,065.19 : x
  2. Step 2: Convert to fraction form
    392,639.09/589,024.23 = 140,065.19/x
  3. Step 3: Cross multiply
    392,639.09x = 589,024.23 × 140,065.19
  4. Step 4: Simplify right side
    392,639.09x = 82,501,787,744.43
  5. Step 5: Solve for x
    x = 82,501,787,744.43/392,639.09
  6. Step 6: Final answer
    x = 210,121.18

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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.