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Finding the Fourth Proportional to 266,556.16, 399,636.72 and 161,350.24

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Solution

The fourth proportional to 266,556.16, 399,636.72 and 161,350.24 is: 241,905.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,556.16 : 399,636.72 = 161,350.24 : x
  2. Step 2: Convert to fraction form
    266,556.16/399,636.72 = 161,350.24/x
  3. Step 3: Cross multiply
    266,556.16x = 399,636.72 × 161,350.24
  4. Step 4: Simplify right side
    266,556.16x = 64,481,480,684.81
  5. Step 5: Solve for x
    x = 64,481,480,684.81/266,556.16
  6. Step 6: Final answer
    x = 241,905.80

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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.