Home / 402,811.80-555,867.56-221,523.17

Finding the Fourth Proportional to 402,811.80, 555,867.56 and 221,523.17

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Solution

The fourth proportional to 402,811.80, 555,867.56 and 221,523.17 is: 305,694.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,811.80 : 555,867.56 = 221,523.17 : x
  2. Step 2: Convert to fraction form
    402,811.80/555,867.56 = 221,523.17/x
  3. Step 3: Cross multiply
    402,811.80x = 555,867.56 × 221,523.17
  4. Step 4: Simplify right side
    402,811.80x = 123,137,543,991.37
  5. Step 5: Solve for x
    x = 123,137,543,991.37/402,811.80
  6. Step 6: Final answer
    x = 305,694.98

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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.