Home / 255,921.40-383,882.05-137,429.74

Finding the Fourth Proportional to 255,921.40, 383,882.05 and 137,429.74

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Solution

The fourth proportional to 255,921.40, 383,882.05 and 137,429.74 is: 206,144.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,921.40 : 383,882.05 = 137,429.74 : x
  2. Step 2: Convert to fraction form
    255,921.40/383,882.05 = 137,429.74/x
  3. Step 3: Cross multiply
    255,921.40x = 383,882.05 × 137,429.74
  4. Step 4: Simplify right side
    255,921.40x = 52,756,810,322.17
  5. Step 5: Solve for x
    x = 52,756,810,322.17/255,921.40
  6. Step 6: Final answer
    x = 206,144.58

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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.