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Finding the Fourth Proportional to 493,945.64, 740,832.29 and 138,875.25

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Solution

The fourth proportional to 493,945.64, 740,832.29 and 138,875.25 is: 208,288.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,945.64 : 740,832.29 = 138,875.25 : x
  2. Step 2: Convert to fraction form
    493,945.64/740,832.29 = 138,875.25/x
  3. Step 3: Cross multiply
    493,945.64x = 740,832.29 × 138,875.25
  4. Step 4: Simplify right side
    493,945.64x = 102,883,269,481.82
  5. Step 5: Solve for x
    x = 102,883,269,481.82/493,945.64
  6. Step 6: Final answer
    x = 208,288.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.