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Finding the Fourth Proportional to 403,650.60, 605,475.90 and 279,234.60

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Solution

The fourth proportional to 403,650.60, 605,475.90 and 279,234.60 is: 418,851.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,650.60 : 605,475.90 = 279,234.60 : x
  2. Step 2: Convert to fraction form
    403,650.60/605,475.90 = 279,234.60/x
  3. Step 3: Cross multiply
    403,650.60x = 605,475.90 × 279,234.60
  4. Step 4: Simplify right side
    403,650.60x = 169,069,820,746.14
  5. Step 5: Solve for x
    x = 169,069,820,746.14/403,650.60
  6. Step 6: Final answer
    x = 418,851.90

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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.