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Finding the Fourth Proportional to 215,656.66, 323,543.23 and 65,892.86

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Solution

The fourth proportional to 215,656.66, 323,543.23 and 65,892.86 is: 98,857.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,656.66 : 323,543.23 = 65,892.86 : x
  2. Step 2: Convert to fraction form
    215,656.66/323,543.23 = 65,892.86/x
  3. Step 3: Cross multiply
    215,656.66x = 323,543.23 × 65,892.86
  4. Step 4: Simplify right side
    215,656.66x = 21,319,188,189.18
  5. Step 5: Solve for x
    x = 21,319,188,189.18/215,656.66
  6. Step 6: Final answer
    x = 98,857.08

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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.