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Finding the Fourth Proportional to 215,300.90, 322,914.09 and 65,504.90

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Solution

The fourth proportional to 215,300.90, 322,914.09 and 65,504.90 is: 98,246.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,300.90 : 322,914.09 = 65,504.90 : x
  2. Step 2: Convert to fraction form
    215,300.90/322,914.09 = 65,504.90/x
  3. Step 3: Cross multiply
    215,300.90x = 322,914.09 × 65,504.90
  4. Step 4: Simplify right side
    215,300.90x = 21,152,455,174.04
  5. Step 5: Solve for x
    x = 21,152,455,174.04/215,300.90
  6. Step 6: Final answer
    x = 98,246.01

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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.