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Finding the Fourth Proportional to 501,188.52, 751,785.30 and 127,211.64

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Solution

The fourth proportional to 501,188.52, 751,785.30 and 127,211.64 is: 190,818.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,188.52 : 751,785.30 = 127,211.64 : x
  2. Step 2: Convert to fraction form
    501,188.52/751,785.30 = 127,211.64/x
  3. Step 3: Cross multiply
    501,188.52x = 751,785.30 × 127,211.64
  4. Step 4: Simplify right side
    501,188.52x = 95,635,840,940.89
  5. Step 5: Solve for x
    x = 95,635,840,940.89/501,188.52
  6. Step 6: Final answer
    x = 190,818.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.