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Finding the Fourth Proportional to 383,389.62, 575,187.96 and 117,142.86

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Solution

The fourth proportional to 383,389.62, 575,187.96 and 117,142.86 is: 175,745.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,389.62 : 575,187.96 = 117,142.86 : x
  2. Step 2: Convert to fraction form
    383,389.62/575,187.96 = 117,142.86/x
  3. Step 3: Cross multiply
    383,389.62x = 575,187.96 × 117,142.86
  4. Step 4: Simplify right side
    383,389.62x = 67,379,162,671.97
  5. Step 5: Solve for x
    x = 67,379,162,671.97/383,389.62
  6. Step 6: Final answer
    x = 175,745.92

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1.5x scale

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.