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Finding the Fourth Proportional to 402,522.81, 555,481.65 and 221,233.24

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Solution

The fourth proportional to 402,522.81, 555,481.65 and 221,233.24 is: 305,301.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,522.81 : 555,481.65 = 221,233.24 : x
  2. Step 2: Convert to fraction form
    402,522.81/555,481.65 = 221,233.24/x
  3. Step 3: Cross multiply
    402,522.81x = 555,481.65 × 221,233.24
  4. Step 4: Simplify right side
    402,522.81x = 122,891,005,190.05
  5. Step 5: Solve for x
    x = 122,891,005,190.05/402,522.81
  6. Step 6: Final answer
    x = 305,301.97

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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.