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Finding the Fourth Proportional to 399,494.78, 551,525.56 and 277,168.58

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Solution

The fourth proportional to 399,494.78, 551,525.56 and 277,168.58 is: 382,647.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,494.78 : 551,525.56 = 277,168.58 : x
  2. Step 2: Convert to fraction form
    399,494.78/551,525.56 = 277,168.58/x
  3. Step 3: Cross multiply
    399,494.78x = 551,525.56 × 277,168.58
  4. Step 4: Simplify right side
    399,494.78x = 152,865,556,298.91
  5. Step 5: Solve for x
    x = 152,865,556,298.91/399,494.78
  6. Step 6: Final answer
    x = 382,647.19

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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.