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Finding the Fourth Proportional to 215,264.40, 322,896.60 and 205,587.60

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Solution

The fourth proportional to 215,264.40, 322,896.60 and 205,587.60 is: 308,381.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,264.40 : 322,896.60 = 205,587.60 : x
  2. Step 2: Convert to fraction form
    215,264.40/322,896.60 = 205,587.60/x
  3. Step 3: Cross multiply
    215,264.40x = 322,896.60 × 205,587.60
  4. Step 4: Simplify right side
    215,264.40x = 66,383,537,042.16
  5. Step 5: Solve for x
    x = 66,383,537,042.16/215,264.40
  6. Step 6: Final answer
    x = 308,381.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.