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Finding the Fourth Proportional to 399,550.70, 551,391.82 and 218,265.64

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Solution

The fourth proportional to 399,550.70, 551,391.82 and 218,265.64 is: 301,213.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,550.70 : 551,391.82 = 218,265.64 : x
  2. Step 2: Convert to fraction form
    399,550.70/551,391.82 = 218,265.64/x
  3. Step 3: Cross multiply
    399,550.70x = 551,391.82 × 218,265.64
  4. Step 4: Simplify right side
    399,550.70x = 120,349,886,558.92
  5. Step 5: Solve for x
    x = 120,349,886,558.92/399,550.70
  6. Step 6: Final answer
    x = 301,213.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.