Home / 257,302.40-385,797.31-115,121.19

Finding the Fourth Proportional to 257,302.40, 385,797.31 and 115,121.19

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Solution

The fourth proportional to 257,302.40, 385,797.31 and 115,121.19 is: 172,611.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,302.40 : 385,797.31 = 115,121.19 : x
  2. Step 2: Convert to fraction form
    257,302.40/385,797.31 = 115,121.19/x
  3. Step 3: Cross multiply
    257,302.40x = 385,797.31 × 115,121.19
  4. Step 4: Simplify right side
    257,302.40x = 44,413,447,016.64
  5. Step 5: Solve for x
    x = 44,413,447,016.64/257,302.40
  6. Step 6: Final answer
    x = 172,611.87

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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.