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Finding the Fourth Proportional to 665,010.37, 997,655.82 and 215,696.34

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Solution

The fourth proportional to 665,010.37, 997,655.82 and 215,696.34 is: 323,590.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,010.37 : 997,655.82 = 215,696.34 : x
  2. Step 2: Convert to fraction form
    665,010.37/997,655.82 = 215,696.34/x
  3. Step 3: Cross multiply
    665,010.37x = 997,655.82 × 215,696.34
  4. Step 4: Simplify right side
    665,010.37x = 215,190,708,953.70
  5. Step 5: Solve for x
    x = 215,190,708,953.70/665,010.37
  6. Step 6: Final answer
    x = 323,590.01

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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.