Home / 258,511.20-356,740.32-143,785.92

Finding the Fourth Proportional to 258,511.20, 356,740.32 and 143,785.92

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Solution

The fourth proportional to 258,511.20, 356,740.32 and 143,785.92 is: 198,421.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,511.20 : 356,740.32 = 143,785.92 : x
  2. Step 2: Convert to fraction form
    258,511.20/356,740.32 = 143,785.92/x
  3. Step 3: Cross multiply
    258,511.20x = 356,740.32 × 143,785.92
  4. Step 4: Simplify right side
    258,511.20x = 51,294,235,112.29
  5. Step 5: Solve for x
    x = 51,294,235,112.29/258,511.20
  6. Step 6: Final answer
    x = 198,421.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.