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Finding the Fourth Proportional to 505,550.89, 758,341.86 and 221,095.09

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Solution

The fourth proportional to 505,550.89, 758,341.86 and 221,095.09 is: 331,649.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,550.89 : 758,341.86 = 221,095.09 : x
  2. Step 2: Convert to fraction form
    505,550.89/758,341.86 = 221,095.09/x
  3. Step 3: Cross multiply
    505,550.89x = 758,341.86 × 221,095.09
  4. Step 4: Simplify right side
    505,550.89x = 167,665,661,787.47
  5. Step 5: Solve for x
    x = 167,665,661,787.47/505,550.89
  6. Step 6: Final answer
    x = 331,649.42

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1.5x scale

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.