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Finding the Fourth Proportional to 251,888, 347,605.52 and 138,710.56

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Solution

The fourth proportional to 251,888, 347,605.52 and 138,710.56 is: 191,420.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,888 : 347,605.52 = 138,710.56 : x
  2. Step 2: Convert to fraction form
    251,888/347,605.52 = 138,710.56/x
  3. Step 3: Cross multiply
    251,888x = 347,605.52 × 138,710.56
  4. Step 4: Simplify right side
    251,888x = 48,216,556,338.29
  5. Step 5: Solve for x
    x = 48,216,556,338.29/251,888
  6. Step 6: Final answer
    x = 191,420.62

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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.