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Finding the Fourth Proportional to 403,639.04, 605,436 and 123,134.24

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Solution

The fourth proportional to 403,639.04, 605,436 and 123,134.24 is: 184,694.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,639.04 : 605,436 = 123,134.24 : x
  2. Step 2: Convert to fraction form
    403,639.04/605,436 = 123,134.24/x
  3. Step 3: Cross multiply
    403,639.04x = 605,436 × 123,134.24
  4. Step 4: Simplify right side
    403,639.04x = 74,549,901,728.64
  5. Step 5: Solve for x
    x = 74,549,901,728.64/403,639.04
  6. Step 6: Final answer
    x = 184,694.48

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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.