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Finding the Fourth Proportional to 403,199.87, 605,173.40 and 203,660.10

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Solution

The fourth proportional to 403,199.87, 605,173.40 and 203,660.10 is: 305,678.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,199.87 : 605,173.40 = 203,660.10 : x
  2. Step 2: Convert to fraction form
    403,199.87/605,173.40 = 203,660.10/x
  3. Step 3: Cross multiply
    403,199.87x = 605,173.40 × 203,660.10
  4. Step 4: Simplify right side
    403,199.87x = 123,249,674,143.04
  5. Step 5: Solve for x
    x = 123,249,674,143.04/403,199.87
  6. Step 6: Final answer
    x = 305,678.86

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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.