Home / 402,335.85-555,233.27-221,059.54

Finding the Fourth Proportional to 402,335.85, 555,233.27 and 221,059.54

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Solution

The fourth proportional to 402,335.85, 555,233.27 and 221,059.54 is: 305,067.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,335.85 : 555,233.27 = 221,059.54 : x
  2. Step 2: Convert to fraction form
    402,335.85/555,233.27 = 221,059.54/x
  3. Step 3: Cross multiply
    402,335.85x = 555,233.27 × 221,059.54
  4. Step 4: Simplify right side
    402,335.85x = 122,739,610,847.64
  5. Step 5: Solve for x
    x = 122,739,610,847.64/402,335.85
  6. Step 6: Final answer
    x = 305,067.54

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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.