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Finding the Fourth Proportional to 401,605.53, 554,213.37 and 220,312.81

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Solution

The fourth proportional to 401,605.53, 554,213.37 and 220,312.81 is: 304,030.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,605.53 : 554,213.37 = 220,312.81 : x
  2. Step 2: Convert to fraction form
    401,605.53/554,213.37 = 220,312.81/x
  3. Step 3: Cross multiply
    401,605.53x = 554,213.37 × 220,312.81
  4. Step 4: Simplify right side
    401,605.53x = 122,100,304,884.27
  5. Step 5: Solve for x
    x = 122,100,304,884.27/401,605.53
  6. Step 6: Final answer
    x = 304,030.44

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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.