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Finding the Fourth Proportional to 342,016.40, 512,441.40 and 291,861.20

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Solution

The fourth proportional to 342,016.40, 512,441.40 and 291,861.20 is: 437,294.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,016.40 : 512,441.40 = 291,861.20 : x
  2. Step 2: Convert to fraction form
    342,016.40/512,441.40 = 291,861.20/x
  3. Step 3: Cross multiply
    342,016.40x = 512,441.40 × 291,861.20
  4. Step 4: Simplify right side
    342,016.40x = 149,561,761,933.68
  5. Step 5: Solve for x
    x = 149,561,761,933.68/342,016.40
  6. Step 6: Final answer
    x = 437,294.12

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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.