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Finding the Fourth Proportional to 403,479.30, 605,298.69 and 119,174.79

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Solution

The fourth proportional to 403,479.30, 605,298.69 and 119,174.79 is: 178,785.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,479.30 : 605,298.69 = 119,174.79 : x
  2. Step 2: Convert to fraction form
    403,479.30/605,298.69 = 119,174.79/x
  3. Step 3: Cross multiply
    403,479.30x = 605,298.69 × 119,174.79
  4. Step 4: Simplify right side
    403,479.30x = 72,136,344,268.03
  5. Step 5: Solve for x
    x = 72,136,344,268.03/403,479.30
  6. Step 6: Final answer
    x = 178,785.74

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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.