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Finding the Fourth Proportional to 266,710.79, 400,378.74 and 210,588.73

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Solution

The fourth proportional to 266,710.79, 400,378.74 and 210,588.73 is: 316,129.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,710.79 : 400,378.74 = 210,588.73 : x
  2. Step 2: Convert to fraction form
    266,710.79/400,378.74 = 210,588.73/x
  3. Step 3: Cross multiply
    266,710.79x = 400,378.74 × 210,588.73
  4. Step 4: Simplify right side
    266,710.79x = 84,315,250,375.60
  5. Step 5: Solve for x
    x = 84,315,250,375.60/266,710.79
  6. Step 6: Final answer
    x = 316,129.88

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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.