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Finding the Fourth Proportional to 576,511.36, 864,786.48 and 155,790.88

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Solution

The fourth proportional to 576,511.36, 864,786.48 and 155,790.88 is: 233,691.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,511.36 : 864,786.48 = 155,790.88 : x
  2. Step 2: Convert to fraction form
    576,511.36/864,786.48 = 155,790.88/x
  3. Step 3: Cross multiply
    576,511.36x = 864,786.48 × 155,790.88
  4. Step 4: Simplify right side
    576,511.36x = 134,725,846,731.30
  5. Step 5: Solve for x
    x = 134,725,846,731.30/576,511.36
  6. Step 6: Final answer
    x = 233,691.57

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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.