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Finding the Fourth Proportional to 399,735.94, 551,691.87 and 254,495.34

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Solution

The fourth proportional to 399,735.94, 551,691.87 and 254,495.34 is: 351,239.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,735.94 : 551,691.87 = 254,495.34 : x
  2. Step 2: Convert to fraction form
    399,735.94/551,691.87 = 254,495.34/x
  3. Step 3: Cross multiply
    399,735.94x = 551,691.87 × 254,495.34
  4. Step 4: Simplify right side
    399,735.94x = 140,403,010,030.89
  5. Step 5: Solve for x
    x = 140,403,010,030.89/399,735.94
  6. Step 6: Final answer
    x = 351,239.40

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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.