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Finding the Fourth Proportional to 402,792.75, 555,858.06 and 221,505.93

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Solution

The fourth proportional to 402,792.75, 555,858.06 and 221,505.93 is: 305,680.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,792.75 : 555,858.06 = 221,505.93 : x
  2. Step 2: Convert to fraction form
    402,792.75/555,858.06 = 221,505.93/x
  3. Step 3: Cross multiply
    402,792.75x = 555,858.06 × 221,505.93
  4. Step 4: Simplify right side
    402,792.75x = 123,125,856,528.30
  5. Step 5: Solve for x
    x = 123,125,856,528.30/402,792.75
  6. Step 6: Final answer
    x = 305,680.42

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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.