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Finding the Fourth Proportional to 266,306.88, 399,349.44 and 108,428.16

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Solution

The fourth proportional to 266,306.88, 399,349.44 and 108,428.16 is: 162,597.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,306.88 : 399,349.44 = 108,428.16 : x
  2. Step 2: Convert to fraction form
    266,306.88/399,349.44 = 108,428.16/x
  3. Step 3: Cross multiply
    266,306.88x = 399,349.44 × 108,428.16
  4. Step 4: Simplify right side
    266,306.88x = 43,300,724,976.23
  5. Step 5: Solve for x
    x = 43,300,724,976.23/266,306.88
  6. Step 6: Final answer
    x = 162,597.09

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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.