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Finding the Fourth Proportional to 251,710.08, 347,346.72 and 138,510.96

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Solution

The fourth proportional to 251,710.08, 347,346.72 and 138,510.96 is: 191,137.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,710.08 : 347,346.72 = 138,510.96 : x
  2. Step 2: Convert to fraction form
    251,710.08/347,346.72 = 138,510.96/x
  3. Step 3: Cross multiply
    251,710.08x = 347,346.72 × 138,510.96
  4. Step 4: Simplify right side
    251,710.08x = 48,111,327,640.05
  5. Step 5: Solve for x
    x = 48,111,327,640.05/251,710.08
  6. Step 6: Final answer
    x = 191,137.87

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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.