Home / 399,326.12-551,092.36-218,054.87

Finding the Fourth Proportional to 399,326.12, 551,092.36 and 218,054.87

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Solution

The fourth proportional to 399,326.12, 551,092.36 and 218,054.87 is: 300,927.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,326.12 : 551,092.36 = 218,054.87 : x
  2. Step 2: Convert to fraction form
    399,326.12/551,092.36 = 218,054.87/x
  3. Step 3: Cross multiply
    399,326.12x = 551,092.36 × 218,054.87
  4. Step 4: Simplify right side
    399,326.12x = 120,168,372,092.64
  5. Step 5: Solve for x
    x = 120,168,372,092.64/399,326.12
  6. Step 6: Final answer
    x = 300,927.90

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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.