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Finding the Fourth Proportional to 251,502.12, 347,627.70 and 221,059.08

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Solution

The fourth proportional to 251,502.12, 347,627.70 and 221,059.08 is: 305,549.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,502.12 : 347,627.70 = 221,059.08 : x
  2. Step 2: Convert to fraction form
    251,502.12/347,627.70 = 221,059.08/x
  3. Step 3: Cross multiply
    251,502.12x = 347,627.70 × 221,059.08
  4. Step 4: Simplify right side
    251,502.12x = 76,846,259,544.52
  5. Step 5: Solve for x
    x = 76,846,259,544.52/251,502.12
  6. Step 6: Final answer
    x = 305,549.15

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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.