Home / 255,930.45-383,895.60-137,438.79

Finding the Fourth Proportional to 255,930.45, 383,895.60 and 137,438.79

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Solution

The fourth proportional to 255,930.45, 383,895.60 and 137,438.79 is: 206,158.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,930.45 : 383,895.60 = 137,438.79 : x
  2. Step 2: Convert to fraction form
    255,930.45/383,895.60 = 137,438.79/x
  3. Step 3: Cross multiply
    255,930.45x = 383,895.60 × 137,438.79
  4. Step 4: Simplify right side
    255,930.45x = 52,762,146,750.32
  5. Step 5: Solve for x
    x = 52,762,146,750.32/255,930.45
  6. Step 6: Final answer
    x = 206,158.14

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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.