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Finding the Fourth Proportional to 528,096.30, 792,144.45 and 212,390.70

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Solution

The fourth proportional to 528,096.30, 792,144.45 and 212,390.70 is: 318,586.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,096.30 : 792,144.45 = 212,390.70 : x
  2. Step 2: Convert to fraction form
    528,096.30/792,144.45 = 212,390.70/x
  3. Step 3: Cross multiply
    528,096.30x = 792,144.45 × 212,390.70
  4. Step 4: Simplify right side
    528,096.30x = 168,244,114,236.62
  5. Step 5: Solve for x
    x = 168,244,114,236.62/528,096.30
  6. Step 6: Final answer
    x = 318,586.05

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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.