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Finding the Fourth Proportional to 215,235.53, 322,871.31 and 65,476.95

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Solution

The fourth proportional to 215,235.53, 322,871.31 and 65,476.95 is: 98,220.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,235.53 : 322,871.31 = 65,476.95 : x
  2. Step 2: Convert to fraction form
    215,235.53/322,871.31 = 65,476.95/x
  3. Step 3: Cross multiply
    215,235.53x = 322,871.31 × 65,476.95
  4. Step 4: Simplify right side
    215,235.53x = 21,140,628,293.92
  5. Step 5: Solve for x
    x = 21,140,628,293.92/215,235.53
  6. Step 6: Final answer
    x = 98,220.91

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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.