Home / 402,839.58-555,906.84-221,551.32

Finding the Fourth Proportional to 402,839.58, 555,906.84 and 221,551.32

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Solution

The fourth proportional to 402,839.58, 555,906.84 and 221,551.32 is: 305,734.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,839.58 : 555,906.84 = 221,551.32 : x
  2. Step 2: Convert to fraction form
    402,839.58/555,906.84 = 221,551.32/x
  3. Step 3: Cross multiply
    402,839.58x = 555,906.84 × 221,551.32
  4. Step 4: Simplify right side
    402,839.58x = 123,161,894,199.03
  5. Step 5: Solve for x
    x = 123,161,894,199.03/402,839.58
  6. Step 6: Final answer
    x = 305,734.34

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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.