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Finding the Fourth Proportional to 403,306.80, 604,814.40 and 203,560.80

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Solution

The fourth proportional to 403,306.80, 604,814.40 and 203,560.80 is: 305,267.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,306.80 : 604,814.40 = 203,560.80 : x
  2. Step 2: Convert to fraction form
    403,306.80/604,814.40 = 203,560.80/x
  3. Step 3: Cross multiply
    403,306.80x = 604,814.40 × 203,560.80
  4. Step 4: Simplify right side
    403,306.80x = 123,116,503,115.52
  5. Step 5: Solve for x
    x = 123,116,503,115.52/403,306.80
  6. Step 6: Final answer
    x = 305,267.61

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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.