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Finding the Fourth Proportional to 403,722.80, 604,855.20 and 235,105.10

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Solution

The fourth proportional to 403,722.80, 604,855.20 and 235,105.10 is: 352,233.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,722.80 : 604,855.20 = 235,105.10 : x
  2. Step 2: Convert to fraction form
    403,722.80/604,855.20 = 235,105.10/x
  3. Step 3: Cross multiply
    403,722.80x = 604,855.20 × 235,105.10
  4. Step 4: Simplify right side
    403,722.80x = 142,204,542,281.52
  5. Step 5: Solve for x
    x = 142,204,542,281.52/403,722.80
  6. Step 6: Final answer
    x = 352,233.12

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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.