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Finding the Fourth Proportional to 404,605.50, 558,357.22 and 223,319

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Solution

The fourth proportional to 404,605.50, 558,357.22 and 223,319 is: 308,181.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,605.50 : 558,357.22 = 223,319 : x
  2. Step 2: Convert to fraction form
    404,605.50/558,357.22 = 223,319/x
  3. Step 3: Cross multiply
    404,605.50x = 558,357.22 × 223,319
  4. Step 4: Simplify right side
    404,605.50x = 124,691,776,013.18
  5. Step 5: Solve for x
    x = 124,691,776,013.18/404,605.50
  6. Step 6: Final answer
    x = 308,181.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.