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Finding the Fourth Proportional to 228,385.98, 342,601.85 and 78,606.45

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Solution

The fourth proportional to 228,385.98, 342,601.85 and 78,606.45 is: 117,917.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,385.98 : 342,601.85 = 78,606.45 : x
  2. Step 2: Convert to fraction form
    228,385.98/342,601.85 = 78,606.45/x
  3. Step 3: Cross multiply
    228,385.98x = 342,601.85 × 78,606.45
  4. Step 4: Simplify right side
    228,385.98x = 26,930,715,388.45
  5. Step 5: Solve for x
    x = 26,930,715,388.45/228,385.98
  6. Step 6: Final answer
    x = 117,917.55

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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.