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Finding the Fourth Proportional to 399,437.08, 551,226.90 and 227,346.61

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Solution

The fourth proportional to 399,437.08, 551,226.90 and 227,346.61 is: 313,740.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,437.08 : 551,226.90 = 227,346.61 : x
  2. Step 2: Convert to fraction form
    399,437.08/551,226.90 = 227,346.61/x
  3. Step 3: Cross multiply
    399,437.08x = 551,226.90 × 227,346.61
  4. Step 4: Simplify right side
    399,437.08x = 125,319,567,055.81
  5. Step 5: Solve for x
    x = 125,319,567,055.81/399,437.08
  6. Step 6: Final answer
    x = 313,740.44

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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.