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Finding the Fourth Proportional to 266,016.24, 399,024.81 and 213,045.12

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Solution

The fourth proportional to 266,016.24, 399,024.81 and 213,045.12 is: 319,568.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,016.24 : 399,024.81 = 213,045.12 : x
  2. Step 2: Convert to fraction form
    266,016.24/399,024.81 = 213,045.12/x
  3. Step 3: Cross multiply
    266,016.24x = 399,024.81 × 213,045.12
  4. Step 4: Simplify right side
    266,016.24x = 85,010,288,529.43
  5. Step 5: Solve for x
    x = 85,010,288,529.43/266,016.24
  6. Step 6: Final answer
    x = 319,568.04

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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.