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Finding the Fourth Proportional to 401,606.78, 554,215.10 and 220,314.06

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Solution

The fourth proportional to 401,606.78, 554,215.10 and 220,314.06 is: 304,032.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,606.78 : 554,215.10 = 220,314.06 : x
  2. Step 2: Convert to fraction form
    401,606.78/554,215.10 = 220,314.06/x
  3. Step 3: Cross multiply
    401,606.78x = 554,215.10 × 220,314.06
  4. Step 4: Simplify right side
    401,606.78x = 122,101,377,692.74
  5. Step 5: Solve for x
    x = 122,101,377,692.74/401,606.78
  6. Step 6: Final answer
    x = 304,032.17

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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.