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Finding the Fourth Proportional to 399,710.82, 551,598.84 and 236,425.80

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Solution

The fourth proportional to 399,710.82, 551,598.84 and 236,425.80 is: 326,266.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,710.82 : 551,598.84 = 236,425.80 : x
  2. Step 2: Convert to fraction form
    399,710.82/551,598.84 = 236,425.80/x
  3. Step 3: Cross multiply
    399,710.82x = 551,598.84 × 236,425.80
  4. Step 4: Simplify right side
    399,710.82x = 130,412,197,026.07
  5. Step 5: Solve for x
    x = 130,412,197,026.07/399,710.82
  6. Step 6: Final answer
    x = 326,266.37

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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.