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Finding the Fourth Proportional to 402,229.60, 555,074.81 and 220,940.97

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Solution

The fourth proportional to 402,229.60, 555,074.81 and 220,940.97 is: 304,897.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,229.60 : 555,074.81 = 220,940.97 : x
  2. Step 2: Convert to fraction form
    402,229.60/555,074.81 = 220,940.97/x
  3. Step 3: Cross multiply
    402,229.60x = 555,074.81 × 220,940.97
  4. Step 4: Simplify right side
    402,229.60x = 122,638,764,586.26
  5. Step 5: Solve for x
    x = 122,638,764,586.26/402,229.60
  6. Step 6: Final answer
    x = 304,897.42

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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.