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Finding the Fourth Proportional to 665,010.24, 997,655.64 and 215,696.22

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Solution

The fourth proportional to 665,010.24, 997,655.64 and 215,696.22 is: 323,589.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,010.24 : 997,655.64 = 215,696.22 : x
  2. Step 2: Convert to fraction form
    665,010.24/997,655.64 = 215,696.22/x
  3. Step 3: Cross multiply
    665,010.24x = 997,655.64 × 215,696.22
  4. Step 4: Simplify right side
    665,010.24x = 215,190,550,409.68
  5. Step 5: Solve for x
    x = 215,190,550,409.68/665,010.24
  6. Step 6: Final answer
    x = 323,589.83

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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.