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Finding the Fourth Proportional to 228,337.66, 342,421.53 and 78,535.90

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Solution

The fourth proportional to 228,337.66, 342,421.53 and 78,535.90 is: 117,774.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,337.66 : 342,421.53 = 78,535.90 : x
  2. Step 2: Convert to fraction form
    228,337.66/342,421.53 = 78,535.90/x
  3. Step 3: Cross multiply
    228,337.66x = 342,421.53 × 78,535.90
  4. Step 4: Simplify right side
    228,337.66x = 26,892,383,037.93
  5. Step 5: Solve for x
    x = 26,892,383,037.93/228,337.66
  6. Step 6: Final answer
    x = 117,774.63

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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.