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Finding the Fourth Proportional to 403,479.40, 605,219.10 and 341,271.40

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Solution

The fourth proportional to 403,479.40, 605,219.10 and 341,271.40 is: 511,907.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,479.40 : 605,219.10 = 341,271.40 : x
  2. Step 2: Convert to fraction form
    403,479.40/605,219.10 = 341,271.40/x
  3. Step 3: Cross multiply
    403,479.40x = 605,219.10 × 341,271.40
  4. Step 4: Simplify right side
    403,479.40x = 206,543,969,563.74
  5. Step 5: Solve for x
    x = 206,543,969,563.74/403,479.40
  6. Step 6: Final answer
    x = 511,907.10

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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.