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Finding the Fourth Proportional to 251,718.86, 347,284.36 and 142,810.36

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Solution

The fourth proportional to 251,718.86, 347,284.36 and 142,810.36 is: 197,028.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,718.86 : 347,284.36 = 142,810.36 : x
  2. Step 2: Convert to fraction form
    251,718.86/347,284.36 = 142,810.36/x
  3. Step 3: Cross multiply
    251,718.86x = 347,284.36 × 142,810.36
  4. Step 4: Simplify right side
    251,718.86x = 49,595,804,473.97
  5. Step 5: Solve for x
    x = 49,595,804,473.97/251,718.86
  6. Step 6: Final answer
    x = 197,028.56

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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.