Home / 402,583.92-555,578.40-221,309.82

Finding the Fourth Proportional to 402,583.92, 555,578.40 and 221,309.82

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Solution

The fourth proportional to 402,583.92, 555,578.40 and 221,309.82 is: 305,414.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,583.92 : 555,578.40 = 221,309.82 : x
  2. Step 2: Convert to fraction form
    402,583.92/555,578.40 = 221,309.82/x
  3. Step 3: Cross multiply
    402,583.92x = 555,578.40 × 221,309.82
  4. Step 4: Simplify right side
    402,583.92x = 122,954,955,699.89
  5. Step 5: Solve for x
    x = 122,954,955,699.89/402,583.92
  6. Step 6: Final answer
    x = 305,414.47

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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.