Home / 231,583,490.72-347,322,163.44-138,236,815.52

Finding the Fourth Proportional to 231,583,490.72, 347,322,163.44 and 138,236,815.52

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Solution

The fourth proportional to 231,583,490.72, 347,322,163.44 and 138,236,815.52 is: 207,323,543.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,583,490.72 : 347,322,163.44 = 138,236,815.52 : x
  2. Step 2: Convert to fraction form
    231,583,490.72/347,322,163.44 = 138,236,815.52/x
  3. Step 3: Cross multiply
    231,583,490.72x = 347,322,163.44 × 138,236,815.52
  4. Step 4: Simplify right side
    231,583,490.72x = 48,012,709,833,462,568
  5. Step 5: Solve for x
    x = 48,012,709,833,462,568/231,583,490.72
  6. Step 6: Final answer
    x = 207,323,543.16

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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.