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Finding the Fourth Proportional to 401,880.69, 554,564.88 and 220,563.81

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Solution

The fourth proportional to 401,880.69, 554,564.88 and 220,563.81 is: 304,361.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,880.69 : 554,564.88 = 220,563.81 : x
  2. Step 2: Convert to fraction form
    401,880.69/554,564.88 = 220,563.81/x
  3. Step 3: Cross multiply
    401,880.69x = 554,564.88 × 220,563.81
  4. Step 4: Simplify right side
    401,880.69x = 122,316,942,824.99
  5. Step 5: Solve for x
    x = 122,316,942,824.99/401,880.69
  6. Step 6: Final answer
    x = 304,361.33

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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.