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Finding the Fourth Proportional to 219,365.25, 329,047.92 and 79,123.86

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Solution

The fourth proportional to 219,365.25, 329,047.92 and 79,123.86 is: 118,685.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,365.25 : 329,047.92 = 79,123.86 : x
  2. Step 2: Convert to fraction form
    219,365.25/329,047.92 = 79,123.86/x
  3. Step 3: Cross multiply
    219,365.25x = 329,047.92 × 79,123.86
  4. Step 4: Simplify right side
    219,365.25x = 26,035,541,555.37
  5. Step 5: Solve for x
    x = 26,035,541,555.37/219,365.25
  6. Step 6: Final answer
    x = 118,685.81

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1.5x scale

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.