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Finding the Fourth Proportional to 211,228.73, 316,818.44 and 84,863.87

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Solution

The fourth proportional to 211,228.73, 316,818.44 and 84,863.87 is: 127,285.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,228.73 : 316,818.44 = 84,863.87 : x
  2. Step 2: Convert to fraction form
    211,228.73/316,818.44 = 84,863.87/x
  3. Step 3: Cross multiply
    211,228.73x = 316,818.44 × 84,863.87
  4. Step 4: Simplify right side
    211,228.73x = 26,886,438,905.76
  5. Step 5: Solve for x
    x = 26,886,438,905.76/211,228.73
  6. Step 6: Final answer
    x = 127,285.90

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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.