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Finding the Fourth Proportional to 399,914.69, 551,888.84 and 238,783.82

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Solution

The fourth proportional to 399,914.69, 551,888.84 and 238,783.82 is: 329,525.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,914.69 : 551,888.84 = 238,783.82 : x
  2. Step 2: Convert to fraction form
    399,914.69/551,888.84 = 238,783.82/x
  3. Step 3: Cross multiply
    399,914.69x = 551,888.84 × 238,783.82
  4. Step 4: Simplify right side
    399,914.69x = 131,782,121,477.21
  5. Step 5: Solve for x
    x = 131,782,121,477.21/399,914.69
  6. Step 6: Final answer
    x = 329,525.59

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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.