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Finding the Fourth Proportional to 399,709.76, 551,630.93 and 227,635.01

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Solution

The fourth proportional to 399,709.76, 551,630.93 and 227,635.01 is: 314,154.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,709.76 : 551,630.93 = 227,635.01 : x
  2. Step 2: Convert to fraction form
    399,709.76/551,630.93 = 227,635.01/x
  3. Step 3: Cross multiply
    399,709.76x = 551,630.93 × 227,635.01
  4. Step 4: Simplify right side
    399,709.76x = 125,570,508,370.53
  5. Step 5: Solve for x
    x = 125,570,508,370.53/399,709.76
  6. Step 6: Final answer
    x = 314,154.22

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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.