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Finding the Fourth Proportional to 518,813.27, 778,243.76 and 158,958.35

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Solution

The fourth proportional to 518,813.27, 778,243.76 and 158,958.35 is: 238,444.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,813.27 : 778,243.76 = 158,958.35 : x
  2. Step 2: Convert to fraction form
    518,813.27/778,243.76 = 158,958.35/x
  3. Step 3: Cross multiply
    518,813.27x = 778,243.76 × 158,958.35
  4. Step 4: Simplify right side
    518,813.27x = 123,708,339,301.39
  5. Step 5: Solve for x
    x = 123,708,339,301.39/518,813.27
  6. Step 6: Final answer
    x = 238,444.83

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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.