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Finding the Fourth Proportional to 501,185.52, 751,780.80 and 127,208.64

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Solution

The fourth proportional to 501,185.52, 751,780.80 and 127,208.64 is: 190,813.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,185.52 : 751,780.80 = 127,208.64 : x
  2. Step 2: Convert to fraction form
    501,185.52/751,780.80 = 127,208.64/x
  3. Step 3: Cross multiply
    501,185.52x = 751,780.80 × 127,208.64
  4. Step 4: Simplify right side
    501,185.52x = 95,633,013,146.11
  5. Step 5: Solve for x
    x = 95,633,013,146.11/501,185.52
  6. Step 6: Final answer
    x = 190,813.60

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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.