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Finding the Fourth Proportional to 266,969.28, 400,453.80 and 79,980.78

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Solution

The fourth proportional to 266,969.28, 400,453.80 and 79,980.78 is: 119,971.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,969.28 : 400,453.80 = 79,980.78 : x
  2. Step 2: Convert to fraction form
    266,969.28/400,453.80 = 79,980.78/x
  3. Step 3: Cross multiply
    266,969.28x = 400,453.80 × 79,980.78
  4. Step 4: Simplify right side
    266,969.28x = 32,028,607,277.96
  5. Step 5: Solve for x
    x = 32,028,607,277.96/266,969.28
  6. Step 6: Final answer
    x = 119,971.13

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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.