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Finding the Fourth Proportional to 399,818.34, 551,757.15 and 218,525.22

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Solution

The fourth proportional to 399,818.34, 551,757.15 and 218,525.22 is: 301,569.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,818.34 : 551,757.15 = 218,525.22 : x
  2. Step 2: Convert to fraction form
    399,818.34/551,757.15 = 218,525.22/x
  3. Step 3: Cross multiply
    399,818.34x = 551,757.15 × 218,525.22
  4. Step 4: Simplify right side
    399,818.34x = 120,572,852,590.32
  5. Step 5: Solve for x
    x = 120,572,852,590.32/399,818.34
  6. Step 6: Final answer
    x = 301,569.09

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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.