Home / 386,976.18-533,997.81-217,177.50

Finding the Fourth Proportional to 386,976.18, 533,997.81 and 217,177.50

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Solution

The fourth proportional to 386,976.18, 533,997.81 and 217,177.50 is: 299,688.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,976.18 : 533,997.81 = 217,177.50 : x
  2. Step 2: Convert to fraction form
    386,976.18/533,997.81 = 217,177.50/x
  3. Step 3: Cross multiply
    386,976.18x = 533,997.81 × 217,177.50
  4. Step 4: Simplify right side
    386,976.18x = 115,972,309,381.28
  5. Step 5: Solve for x
    x = 115,972,309,381.28/386,976.18
  6. Step 6: Final answer
    x = 299,688.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.