Home / 258,355.15-387,606.84-108,518.38

Finding the Fourth Proportional to 258,355.15, 387,606.84 and 108,518.38

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Solution

The fourth proportional to 258,355.15, 387,606.84 and 108,518.38 is: 162,808.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,355.15 : 387,606.84 = 108,518.38 : x
  2. Step 2: Convert to fraction form
    258,355.15/387,606.84 = 108,518.38/x
  3. Step 3: Cross multiply
    258,355.15x = 387,606.84 × 108,518.38
  4. Step 4: Simplify right side
    258,355.15x = 42,062,466,353.72
  5. Step 5: Solve for x
    x = 42,062,466,353.72/258,355.15
  6. Step 6: Final answer
    x = 162,808.70

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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.