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Finding the Fourth Proportional to 399,755.55, 551,662.72 and 227,689.54

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Solution

The fourth proportional to 399,755.55, 551,662.72 and 227,689.54 is: 314,211.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,755.55 : 551,662.72 = 227,689.54 : x
  2. Step 2: Convert to fraction form
    399,755.55/551,662.72 = 227,689.54/x
  3. Step 3: Cross multiply
    399,755.55x = 551,662.72 × 227,689.54
  4. Step 4: Simplify right side
    399,755.55x = 125,607,829,188.36
  5. Step 5: Solve for x
    x = 125,607,829,188.36/399,755.55
  6. Step 6: Final answer
    x = 314,211.60

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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.