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Finding the Fourth Proportional to 207,989.00, 287,037.94 and 117,311.88

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Solution

The fourth proportional to 207,989.00, 287,037.94 and 117,311.88 is: 161,897.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,989.00 : 287,037.94 = 117,311.88 : x
  2. Step 2: Convert to fraction form
    207,989.00/287,037.94 = 117,311.88/x
  3. Step 3: Cross multiply
    207,989.00x = 287,037.94 × 117,311.88
  4. Step 4: Simplify right side
    207,989.00x = 33,672,959,320.71
  5. Step 5: Solve for x
    x = 33,672,959,320.71/207,989.00
  6. Step 6: Final answer
    x = 161,897.79

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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.