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Finding the Fourth Proportional to 517,898.43, 776,954.16 and 218,379.87

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Solution

The fourth proportional to 517,898.43, 776,954.16 and 218,379.87 is: 327,614.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,898.43 : 776,954.16 = 218,379.87 : x
  2. Step 2: Convert to fraction form
    517,898.43/776,954.16 = 218,379.87/x
  3. Step 3: Cross multiply
    517,898.43x = 776,954.16 × 218,379.87
  4. Step 4: Simplify right side
    517,898.43x = 169,671,148,456.76
  5. Step 5: Solve for x
    x = 169,671,148,456.76/517,898.43
  6. Step 6: Final answer
    x = 327,614.72

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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.