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Finding the Fourth Proportional to 266,681.82, 400,009.74 and 66,997.68

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Solution

The fourth proportional to 266,681.82, 400,009.74 and 66,997.68 is: 100,493.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,681.82 : 400,009.74 = 66,997.68 : x
  2. Step 2: Convert to fraction form
    266,681.82/400,009.74 = 66,997.68/x
  3. Step 3: Cross multiply
    266,681.82x = 400,009.74 × 66,997.68
  4. Step 4: Simplify right side
    266,681.82x = 26,799,724,557.40
  5. Step 5: Solve for x
    x = 26,799,724,557.40/266,681.82
  6. Step 6: Final answer
    x = 100,493.26

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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.