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Finding the Fourth Proportional to 401,605.89, 554,218.17 and 220,334.57

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Solution

The fourth proportional to 401,605.89, 554,218.17 and 220,334.57 is: 304,062.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,605.89 : 554,218.17 = 220,334.57 : x
  2. Step 2: Convert to fraction form
    401,605.89/554,218.17 = 220,334.57/x
  3. Step 3: Cross multiply
    401,605.89x = 554,218.17 × 220,334.57
  4. Step 4: Simplify right side
    401,605.89x = 122,113,421,071.46
  5. Step 5: Solve for x
    x = 122,113,421,071.46/401,605.89
  6. Step 6: Final answer
    x = 304,062.83

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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.