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Finding the Fourth Proportional to 266,721.80, 400,082.70 and 265,166.60

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Solution

The fourth proportional to 266,721.80, 400,082.70 and 265,166.60 is: 397,749.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,721.80 : 400,082.70 = 265,166.60 : x
  2. Step 2: Convert to fraction form
    266,721.80/400,082.70 = 265,166.60/x
  3. Step 3: Cross multiply
    266,721.80x = 400,082.70 × 265,166.60
  4. Step 4: Simplify right side
    266,721.80x = 106,088,569,277.82
  5. Step 5: Solve for x
    x = 106,088,569,277.82/266,721.80
  6. Step 6: Final answer
    x = 397,749.90

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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.