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Finding the Fourth Proportional to 219,103.52, 328,655.28 and 71,359.52

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Solution

The fourth proportional to 219,103.52, 328,655.28 and 71,359.52 is: 107,039.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,103.52 : 328,655.28 = 71,359.52 : x
  2. Step 2: Convert to fraction form
    219,103.52/328,655.28 = 71,359.52/x
  3. Step 3: Cross multiply
    219,103.52x = 328,655.28 × 71,359.52
  4. Step 4: Simplify right side
    219,103.52x = 23,452,683,026.27
  5. Step 5: Solve for x
    x = 23,452,683,026.27/219,103.52
  6. Step 6: Final answer
    x = 107,039.28

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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.