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Finding the Fourth Proportional to 517,239.18, 775,826.55 and 247,558.86

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Solution

The fourth proportional to 517,239.18, 775,826.55 and 247,558.86 is: 371,322.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,239.18 : 775,826.55 = 247,558.86 : x
  2. Step 2: Convert to fraction form
    517,239.18/775,826.55 = 247,558.86/x
  3. Step 3: Cross multiply
    517,239.18x = 775,826.55 × 247,558.86
  4. Step 4: Simplify right side
    517,239.18x = 192,062,736,275.73
  5. Step 5: Solve for x
    x = 192,062,736,275.73/517,239.18
  6. Step 6: Final answer
    x = 371,322.87

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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.