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Finding the Fourth Proportional to 219,057.40, 328,715.70 and 159,743.80

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Solution

The fourth proportional to 219,057.40, 328,715.70 and 159,743.80 is: 239,710.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,057.40 : 328,715.70 = 159,743.80 : x
  2. Step 2: Convert to fraction form
    219,057.40/328,715.70 = 159,743.80/x
  3. Step 3: Cross multiply
    219,057.40x = 328,715.70 × 159,743.80
  4. Step 4: Simplify right side
    219,057.40x = 52,510,295,037.66
  5. Step 5: Solve for x
    x = 52,510,295,037.66/219,057.40
  6. Step 6: Final answer
    x = 239,710.21

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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.