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Finding the Fourth Proportional to 356,939.96, 535,239.10 and 207,221.60

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Solution

The fourth proportional to 356,939.96, 535,239.10 and 207,221.60 is: 310,733.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,939.96 : 535,239.10 = 207,221.60 : x
  2. Step 2: Convert to fraction form
    356,939.96/535,239.10 = 207,221.60/x
  3. Step 3: Cross multiply
    356,939.96x = 535,239.10 × 207,221.60
  4. Step 4: Simplify right side
    356,939.96x = 110,913,102,684.56
  5. Step 5: Solve for x
    x = 110,913,102,684.56/356,939.96
  6. Step 6: Final answer
    x = 310,733.22

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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.