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Finding the Fourth Proportional to 399,401.88, 551,245.80 and 236,051.76

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Solution

The fourth proportional to 399,401.88, 551,245.80 and 236,051.76 is: 325,793.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,401.88 : 551,245.80 = 236,051.76 : x
  2. Step 2: Convert to fraction form
    399,401.88/551,245.80 = 236,051.76/x
  3. Step 3: Cross multiply
    399,401.88x = 551,245.80 × 236,051.76
  4. Step 4: Simplify right side
    399,401.88x = 130,122,541,282.61
  5. Step 5: Solve for x
    x = 130,122,541,282.61/399,401.88
  6. Step 6: Final answer
    x = 325,793.51

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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.