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Finding the Fourth Proportional to 558,825.78, 838,230.48 and 138,101.64

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Solution

The fourth proportional to 558,825.78, 838,230.48 and 138,101.64 is: 207,150.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,825.78 : 838,230.48 = 138,101.64 : x
  2. Step 2: Convert to fraction form
    558,825.78/838,230.48 = 138,101.64/x
  3. Step 3: Cross multiply
    558,825.78x = 838,230.48 × 138,101.64
  4. Step 4: Simplify right side
    558,825.78x = 115,761,003,985.99
  5. Step 5: Solve for x
    x = 115,761,003,985.99/558,825.78
  6. Step 6: Final answer
    x = 207,150.44

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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.