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Finding the Fourth Proportional to 551,838.33, 761,604.53 and 310,131.09

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Solution

The fourth proportional to 551,838.33, 761,604.53 and 310,131.09 is: 428,018.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,838.33 : 761,604.53 = 310,131.09 : x
  2. Step 2: Convert to fraction form
    551,838.33/761,604.53 = 310,131.09/x
  3. Step 3: Cross multiply
    551,838.33x = 761,604.53 × 310,131.09
  4. Step 4: Simplify right side
    551,838.33x = 236,197,241,487.18
  5. Step 5: Solve for x
    x = 236,197,241,487.18/551,838.33
  6. Step 6: Final answer
    x = 428,018.91

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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.