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Finding the Fourth Proportional to 251,877, 347,590.26 and 138,699.48

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Solution

The fourth proportional to 251,877, 347,590.26 and 138,699.48 is: 191,405.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,877 : 347,590.26 = 138,699.48 : x
  2. Step 2: Convert to fraction form
    251,877/347,590.26 = 138,699.48/x
  3. Step 3: Cross multiply
    251,877x = 347,590.26 × 138,699.48
  4. Step 4: Simplify right side
    251,877x = 48,210,588,315.06
  5. Step 5: Solve for x
    x = 48,210,588,315.06/251,877
  6. Step 6: Final answer
    x = 191,405.28

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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.