Home / 402,610.62-555,604.45-221,334.20

Finding the Fourth Proportional to 402,610.62, 555,604.45 and 221,334.20

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Solution

The fourth proportional to 402,610.62, 555,604.45 and 221,334.20 is: 305,442.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,610.62 : 555,604.45 = 221,334.20 : x
  2. Step 2: Convert to fraction form
    402,610.62/555,604.45 = 221,334.20/x
  3. Step 3: Cross multiply
    402,610.62x = 555,604.45 × 221,334.20
  4. Step 4: Simplify right side
    402,610.62x = 122,974,263,125.83
  5. Step 5: Solve for x
    x = 122,974,263,125.83/402,610.62
  6. Step 6: Final answer
    x = 305,442.17

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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.