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Finding the Fourth Proportional to 551,814.54, 761,524.12 and 310,101.90

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Solution

The fourth proportional to 551,814.54, 761,524.12 and 310,101.90 is: 427,951.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,814.54 : 761,524.12 = 310,101.90 : x
  2. Step 2: Convert to fraction form
    551,814.54/761,524.12 = 310,101.90/x
  3. Step 3: Cross multiply
    551,814.54x = 761,524.12 × 310,101.90
  4. Step 4: Simplify right side
    551,814.54x = 236,150,076,507.83
  5. Step 5: Solve for x
    x = 236,150,076,507.83/551,814.54
  6. Step 6: Final answer
    x = 427,951.89

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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.