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Finding the Fourth Proportional to 399,455.01, 551,225.59 and 227,414.86

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Solution

The fourth proportional to 399,455.01, 551,225.59 and 227,414.86 is: 313,819.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,455.01 : 551,225.59 = 227,414.86 : x
  2. Step 2: Convert to fraction form
    399,455.01/551,225.59 = 227,414.86/x
  3. Step 3: Cross multiply
    399,455.01x = 551,225.59 × 227,414.86
  4. Step 4: Simplify right side
    399,455.01x = 125,356,888,431.67
  5. Step 5: Solve for x
    x = 125,356,888,431.67/399,455.01
  6. Step 6: Final answer
    x = 313,819.79

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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.