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Finding the Fourth Proportional to 399,426.76, 551,212.70 and 227,336.30

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Solution

The fourth proportional to 399,426.76, 551,212.70 and 227,336.30 is: 313,726.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,426.76 : 551,212.70 = 227,336.30 : x
  2. Step 2: Convert to fraction form
    399,426.76/551,212.70 = 227,336.30/x
  3. Step 3: Cross multiply
    399,426.76x = 551,212.70 × 227,336.30
  4. Step 4: Simplify right side
    399,426.76x = 125,310,655,731.01
  5. Step 5: Solve for x
    x = 125,310,655,731.01/399,426.76
  6. Step 6: Final answer
    x = 313,726.24

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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.