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Finding the Fourth Proportional to 199,485.71, 275,288.87 and 113,444.64

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Solution

The fourth proportional to 199,485.71, 275,288.87 and 113,444.64 is: 156,552.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,485.71 : 275,288.87 = 113,444.64 : x
  2. Step 2: Convert to fraction form
    199,485.71/275,288.87 = 113,444.64/x
  3. Step 3: Cross multiply
    199,485.71x = 275,288.87 × 113,444.64
  4. Step 4: Simplify right side
    199,485.71x = 31,230,046,753.16
  5. Step 5: Solve for x
    x = 31,230,046,753.16/199,485.71
  6. Step 6: Final answer
    x = 156,552.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.