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Finding the Fourth Proportional to 221,840.71, 332,779.52 and 72,077.69

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Solution

The fourth proportional to 221,840.71, 332,779.52 and 72,077.69 is: 108,122.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,840.71 : 332,779.52 = 72,077.69 : x
  2. Step 2: Convert to fraction form
    221,840.71/332,779.52 = 72,077.69/x
  3. Step 3: Cross multiply
    221,840.71x = 332,779.52 × 72,077.69
  4. Step 4: Simplify right side
    221,840.71x = 23,985,979,080.91
  5. Step 5: Solve for x
    x = 23,985,979,080.91/221,840.71
  6. Step 6: Final answer
    x = 108,122.53

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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.