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Finding the Fourth Proportional to 251,333.96, 346,832.08 and 138,155.90

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Solution

The fourth proportional to 251,333.96, 346,832.08 and 138,155.90 is: 190,650.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,333.96 : 346,832.08 = 138,155.90 : x
  2. Step 2: Convert to fraction form
    251,333.96/346,832.08 = 138,155.90/x
  3. Step 3: Cross multiply
    251,333.96x = 346,832.08 × 138,155.90
  4. Step 4: Simplify right side
    251,333.96x = 47,916,896,081.72
  5. Step 5: Solve for x
    x = 47,916,896,081.72/251,333.96
  6. Step 6: Final answer
    x = 190,650.31

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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.