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Finding the Fourth Proportional to 518,652.81, 778,003.52 and 252,095.58

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Solution

The fourth proportional to 518,652.81, 778,003.52 and 252,095.58 is: 378,155.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,652.81 : 778,003.52 = 252,095.58 : x
  2. Step 2: Convert to fraction form
    518,652.81/778,003.52 = 252,095.58/x
  3. Step 3: Cross multiply
    518,652.81x = 778,003.52 × 252,095.58
  4. Step 4: Simplify right side
    518,652.81x = 196,131,247,355.96
  5. Step 5: Solve for x
    x = 196,131,247,355.96/518,652.81
  6. Step 6: Final answer
    x = 378,155.18

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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.