Home / 255,727.11-383,606.03-78,235.66

Finding the Fourth Proportional to 255,727.11, 383,606.03 and 78,235.66

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Solution

The fourth proportional to 255,727.11, 383,606.03 and 78,235.66 is: 117,358.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,727.11 : 383,606.03 = 78,235.66 : x
  2. Step 2: Convert to fraction form
    255,727.11/383,606.03 = 78,235.66/x
  3. Step 3: Cross multiply
    255,727.11x = 383,606.03 × 78,235.66
  4. Step 4: Simplify right side
    255,727.11x = 30,011,670,937.03
  5. Step 5: Solve for x
    x = 30,011,670,937.03/255,727.11
  6. Step 6: Final answer
    x = 117,358.19

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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.