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Finding the Fourth Proportional to 403,390.40, 605,085.60 and 341,182.40

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Solution

The fourth proportional to 403,390.40, 605,085.60 and 341,182.40 is: 511,773.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,390.40 : 605,085.60 = 341,182.40 : x
  2. Step 2: Convert to fraction form
    403,390.40/605,085.60 = 341,182.40/x
  3. Step 3: Cross multiply
    403,390.40x = 605,085.60 × 341,182.40
  4. Step 4: Simplify right side
    403,390.40x = 206,444,557,213.44
  5. Step 5: Solve for x
    x = 206,444,557,213.44/403,390.40
  6. Step 6: Final answer
    x = 511,773.60

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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.