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Finding the Fourth Proportional to 403,379.20, 604,147.20 and 237,491.20

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Solution

The fourth proportional to 403,379.20, 604,147.20 and 237,491.20 is: 355,694.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,379.20 : 604,147.20 = 237,491.20 : x
  2. Step 2: Convert to fraction form
    403,379.20/604,147.20 = 237,491.20/x
  3. Step 3: Cross multiply
    403,379.20x = 604,147.20 × 237,491.20
  4. Step 4: Simplify right side
    403,379.20x = 143,479,643,504.64
  5. Step 5: Solve for x
    x = 143,479,643,504.64/403,379.20
  6. Step 6: Final answer
    x = 355,694.20

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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.