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Finding the Fourth Proportional to 402,868.62, 555,974.55 and 221,597.42

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Solution

The fourth proportional to 402,868.62, 555,974.55 and 221,597.42 is: 305,813.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,868.62 : 555,974.55 = 221,597.42 : x
  2. Step 2: Convert to fraction form
    402,868.62/555,974.55 = 221,597.42/x
  3. Step 3: Cross multiply
    402,868.62x = 555,974.55 × 221,597.42
  4. Step 4: Simplify right side
    402,868.62x = 123,202,526,213.15
  5. Step 5: Solve for x
    x = 123,202,526,213.15/402,868.62
  6. Step 6: Final answer
    x = 305,813.16

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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.