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Finding the Fourth Proportional to 228,603.80, 342,905.70 and 194,778.20

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Solution

The fourth proportional to 228,603.80, 342,905.70 and 194,778.20 is: 292,167.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,603.80 : 342,905.70 = 194,778.20 : x
  2. Step 2: Convert to fraction form
    228,603.80/342,905.70 = 194,778.20/x
  3. Step 3: Cross multiply
    228,603.80x = 342,905.70 × 194,778.20
  4. Step 4: Simplify right side
    228,603.80x = 66,790,555,015.74
  5. Step 5: Solve for x
    x = 66,790,555,015.74/228,603.80
  6. Step 6: Final answer
    x = 292,167.30

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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.