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Finding the Fourth Proportional to 403,815.02, 605,700.60 and 123,310.40

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Solution

The fourth proportional to 403,815.02, 605,700.60 and 123,310.40 is: 184,958.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,815.02 : 605,700.60 = 123,310.40 : x
  2. Step 2: Convert to fraction form
    403,815.02/605,700.60 = 123,310.40/x
  3. Step 3: Cross multiply
    403,815.02x = 605,700.60 × 123,310.40
  4. Step 4: Simplify right side
    403,815.02x = 74,689,183,266.24
  5. Step 5: Solve for x
    x = 74,689,183,266.24/403,815.02
  6. Step 6: Final answer
    x = 184,958.90

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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.