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Finding the Fourth Proportional to 558,817.77, 838,218.46 and 138,093.65

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Solution

The fourth proportional to 558,817.77, 838,218.46 and 138,093.65 is: 207,138.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,817.77 : 838,218.46 = 138,093.65 : x
  2. Step 2: Convert to fraction form
    558,817.77/838,218.46 = 138,093.65/x
  3. Step 3: Cross multiply
    558,817.77x = 838,218.46 × 138,093.65
  4. Step 4: Simplify right side
    558,817.77x = 115,752,646,638.78
  5. Step 5: Solve for x
    x = 115,752,646,638.78/558,817.77
  6. Step 6: Final answer
    x = 207,138.45

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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.