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Finding the Fourth Proportional to 558,816.77, 838,216.96 and 138,092.65

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Solution

The fourth proportional to 558,816.77, 838,216.96 and 138,092.65 is: 207,136.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,816.77 : 838,216.96 = 138,092.65 : x
  2. Step 2: Convert to fraction form
    558,816.77/838,216.96 = 138,092.65/x
  3. Step 3: Cross multiply
    558,816.77x = 838,216.96 × 138,092.65
  4. Step 4: Simplify right side
    558,816.77x = 115,751,598,840.57
  5. Step 5: Solve for x
    x = 115,751,598,840.57/558,816.77
  6. Step 6: Final answer
    x = 207,136.94

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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.