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Finding the Fourth Proportional to 266,004.80, 399,007.20 and 79,016.30

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Solution

The fourth proportional to 266,004.80, 399,007.20 and 79,016.30 is: 118,524.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,004.80 : 399,007.20 = 79,016.30 : x
  2. Step 2: Convert to fraction form
    266,004.80/399,007.20 = 79,016.30/x
  3. Step 3: Cross multiply
    266,004.80x = 399,007.20 × 79,016.30
  4. Step 4: Simplify right side
    266,004.80x = 31,528,072,617.36
  5. Step 5: Solve for x
    x = 31,528,072,617.36/266,004.80
  6. Step 6: Final answer
    x = 118,524.45

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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.