Home / 403,390.16-605,079.69-137,336.21

Finding the Fourth Proportional to 403,390.16, 605,079.69 and 137,336.21

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Solution

The fourth proportional to 403,390.16, 605,079.69 and 137,336.21 is: 206,002.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,390.16 : 605,079.69 = 137,336.21 : x
  2. Step 2: Convert to fraction form
    403,390.16/605,079.69 = 137,336.21/x
  3. Step 3: Cross multiply
    403,390.16x = 605,079.69 × 137,336.21
  4. Step 4: Simplify right side
    403,390.16x = 83,099,351,372.57
  5. Step 5: Solve for x
    x = 83,099,351,372.57/403,390.16
  6. Step 6: Final answer
    x = 206,002.43

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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.