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Finding the Fourth Proportional to 558,907.40, 838,579.80 and 203,957.30

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Solution

The fourth proportional to 558,907.40, 838,579.80 and 203,957.30 is: 306,015.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,907.40 : 838,579.80 = 203,957.30 : x
  2. Step 2: Convert to fraction form
    558,907.40/838,579.80 = 203,957.30/x
  3. Step 3: Cross multiply
    558,907.40x = 838,579.80 × 203,957.30
  4. Step 4: Simplify right side
    558,907.40x = 171,034,471,842.54
  5. Step 5: Solve for x
    x = 171,034,471,842.54/558,907.40
  6. Step 6: Final answer
    x = 306,015.76

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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.