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Finding the Fourth Proportional to 403,670.08, 605,294.88 and 190,380.72

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Solution

The fourth proportional to 403,670.08, 605,294.88 and 190,380.72 is: 285,471.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,670.08 : 605,294.88 = 190,380.72 : x
  2. Step 2: Convert to fraction form
    403,670.08/605,294.88 = 190,380.72/x
  3. Step 3: Cross multiply
    403,670.08x = 605,294.88 × 190,380.72
  4. Step 4: Simplify right side
    403,670.08x = 115,236,476,197.04
  5. Step 5: Solve for x
    x = 115,236,476,197.04/403,670.08
  6. Step 6: Final answer
    x = 285,471.93

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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.