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Finding the Fourth Proportional to 543,772.50, 815,832.10 and 228,144.66

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Solution

The fourth proportional to 543,772.50, 815,832.10 and 228,144.66 is: 342,289.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,772.50 : 815,832.10 = 228,144.66 : x
  2. Step 2: Convert to fraction form
    543,772.50/815,832.10 = 228,144.66/x
  3. Step 3: Cross multiply
    543,772.50x = 815,832.10 × 228,144.66
  4. Step 4: Simplify right side
    543,772.50x = 186,127,737,071.59
  5. Step 5: Solve for x
    x = 186,127,737,071.59/543,772.50
  6. Step 6: Final answer
    x = 342,289.72

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Double scale
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Similar ratio
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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.