Home / 245,379.40-338,621.54-137,949.91

Finding the Fourth Proportional to 245,379.40, 338,621.54 and 137,949.91

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Solution

The fourth proportional to 245,379.40, 338,621.54 and 137,949.91 is: 190,369.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,379.40 : 338,621.54 = 137,949.91 : x
  2. Step 2: Convert to fraction form
    245,379.40/338,621.54 = 137,949.91/x
  3. Step 3: Cross multiply
    245,379.40x = 338,621.54 × 137,949.91
  4. Step 4: Simplify right side
    245,379.40x = 46,712,810,277.31
  5. Step 5: Solve for x
    x = 46,712,810,277.31/245,379.40
  6. Step 6: Final answer
    x = 190,369.73

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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.