Home / 402,476.19-555,427.35-221,192.73

Finding the Fourth Proportional to 402,476.19, 555,427.35 and 221,192.73

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Solution

The fourth proportional to 402,476.19, 555,427.35 and 221,192.73 is: 305,251.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,476.19 : 555,427.35 = 221,192.73 : x
  2. Step 2: Convert to fraction form
    402,476.19/555,427.35 = 221,192.73/x
  3. Step 3: Cross multiply
    402,476.19x = 555,427.35 × 221,192.73
  4. Step 4: Simplify right side
    402,476.19x = 122,856,491,863.17
  5. Step 5: Solve for x
    x = 122,856,491,863.17/402,476.19
  6. Step 6: Final answer
    x = 305,251.58

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1.5x scale

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.