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Finding the Fourth Proportional to 403,366.20, 605,049.30 and 338,412.30

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Solution

The fourth proportional to 403,366.20, 605,049.30 and 338,412.30 is: 507,618.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,366.20 : 605,049.30 = 338,412.30 : x
  2. Step 2: Convert to fraction form
    403,366.20/605,049.30 = 338,412.30/x
  3. Step 3: Cross multiply
    403,366.20x = 605,049.30 × 338,412.30
  4. Step 4: Simplify right side
    403,366.20x = 204,756,125,226.39
  5. Step 5: Solve for x
    x = 204,756,125,226.39/403,366.20
  6. Step 6: Final answer
    x = 507,618.45

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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.