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Finding the Fourth Proportional to 215,291.72, 323,006.74 and 65,561.00

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Solution

The fourth proportional to 215,291.72, 323,006.74 and 65,561.00 is: 98,362.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,291.72 : 323,006.74 = 65,561.00 : x
  2. Step 2: Convert to fraction form
    215,291.72/323,006.74 = 65,561.00/x
  3. Step 3: Cross multiply
    215,291.72x = 323,006.74 × 65,561.00
  4. Step 4: Simplify right side
    215,291.72x = 21,176,643,102.20
  5. Step 5: Solve for x
    x = 21,176,643,102.20/215,291.72
  6. Step 6: Final answer
    x = 98,362.55

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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.