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Finding the Fourth Proportional to 402,599.73, 555,589.42 and 221,323.33

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Solution

The fourth proportional to 402,599.73, 555,589.42 and 221,323.33 is: 305,427.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,599.73 : 555,589.42 = 221,323.33 : x
  2. Step 2: Convert to fraction form
    402,599.73/555,589.42 = 221,323.33/x
  3. Step 3: Cross multiply
    402,599.73x = 555,589.42 × 221,323.33
  4. Step 4: Simplify right side
    402,599.73x = 122,964,901,828.31
  5. Step 5: Solve for x
    x = 122,964,901,828.31/402,599.73
  6. Step 6: Final answer
    x = 305,427.19

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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.