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Finding the Fourth Proportional to 612,997.80, 919,577.01 and 202,530.72

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Solution

The fourth proportional to 612,997.80, 919,577.01 and 202,530.72 is: 303,822.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,997.80 : 919,577.01 = 202,530.72 : x
  2. Step 2: Convert to fraction form
    612,997.80/919,577.01 = 202,530.72/x
  3. Step 3: Cross multiply
    612,997.80x = 919,577.01 × 202,530.72
  4. Step 4: Simplify right side
    612,997.80x = 186,242,593,930.75
  5. Step 5: Solve for x
    x = 186,242,593,930.75/612,997.80
  6. Step 6: Final answer
    x = 303,822.61

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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.