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Finding the Fourth Proportional to 401,739, 554,398.26 and 220,453.95

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Solution

The fourth proportional to 401,739, 554,398.26 and 220,453.95 is: 304,225.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,739 : 554,398.26 = 220,453.95 : x
  2. Step 2: Convert to fraction form
    401,739/554,398.26 = 220,453.95/x
  3. Step 3: Cross multiply
    401,739x = 554,398.26 × 220,453.95
  4. Step 4: Simplify right side
    401,739x = 122,219,286,290.13
  5. Step 5: Solve for x
    x = 122,219,286,290.13/401,739
  6. Step 6: Final answer
    x = 304,225.59

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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.