Home / 403,399.20-605,098.80-338,445.30

Finding the Fourth Proportional to 403,399.20, 605,098.80 and 338,445.30

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Solution

The fourth proportional to 403,399.20, 605,098.80 and 338,445.30 is: 507,667.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,399.20 : 605,098.80 = 338,445.30 : x
  2. Step 2: Convert to fraction form
    403,399.20/605,098.80 = 338,445.30/x
  3. Step 3: Cross multiply
    403,399.20x = 605,098.80 × 338,445.30
  4. Step 4: Simplify right side
    403,399.20x = 204,792,844,895.64
  5. Step 5: Solve for x
    x = 204,792,844,895.64/403,399.20
  6. Step 6: Final answer
    x = 507,667.95

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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.