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Finding the Fourth Proportional to 515,167.91, 772,206.47 and 173,285.88

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Solution

The fourth proportional to 515,167.91, 772,206.47 and 173,285.88 is: 259,745.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,167.91 : 772,206.47 = 173,285.88 : x
  2. Step 2: Convert to fraction form
    515,167.91/772,206.47 = 173,285.88/x
  3. Step 3: Cross multiply
    515,167.91x = 772,206.47 × 173,285.88
  4. Step 4: Simplify right side
    515,167.91x = 133,812,475,070.63
  5. Step 5: Solve for x
    x = 133,812,475,070.63/515,167.91
  6. Step 6: Final answer
    x = 259,745.36

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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.