Home / 255,831.32-383,747.91-78,337.61

Finding the Fourth Proportional to 255,831.32, 383,747.91 and 78,337.61

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Solution

The fourth proportional to 255,831.32, 383,747.91 and 78,337.61 is: 117,506.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,831.32 : 383,747.91 = 78,337.61 : x
  2. Step 2: Convert to fraction form
    255,831.32/383,747.91 = 78,337.61/x
  3. Step 3: Cross multiply
    255,831.32x = 383,747.91 × 78,337.61
  4. Step 4: Simplify right side
    255,831.32x = 30,061,895,365.03
  5. Step 5: Solve for x
    x = 30,061,895,365.03/255,831.32
  6. Step 6: Final answer
    x = 117,506.70

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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.