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Finding the Fourth Proportional to 403,479.12, 605,309.40 and 123,024.72

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Solution

The fourth proportional to 403,479.12, 605,309.40 and 123,024.72 is: 184,564.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,479.12 : 605,309.40 = 123,024.72 : x
  2. Step 2: Convert to fraction form
    403,479.12/605,309.40 = 123,024.72/x
  3. Step 3: Cross multiply
    403,479.12x = 605,309.40 × 123,024.72
  4. Step 4: Simplify right side
    403,479.12x = 74,468,019,448.37
  5. Step 5: Solve for x
    x = 74,468,019,448.37/403,479.12
  6. Step 6: Final answer
    x = 184,564.74

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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.