Home / 255,726.11-383,604.53-78,234.66

Finding the Fourth Proportional to 255,726.11, 383,604.53 and 78,234.66

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Solution

The fourth proportional to 255,726.11, 383,604.53 and 78,234.66 is: 117,356.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,726.11 : 383,604.53 = 78,234.66 : x
  2. Step 2: Convert to fraction form
    255,726.11/383,604.53 = 78,234.66/x
  3. Step 3: Cross multiply
    255,726.11x = 383,604.53 × 78,234.66
  4. Step 4: Simplify right side
    255,726.11x = 30,011,169,587.84
  5. Step 5: Solve for x
    x = 30,011,169,587.84/255,726.11
  6. Step 6: Final answer
    x = 117,356.69

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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.