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Finding the Fourth Proportional to 266,005.80, 399,267.90 and 133,036.20

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Solution

The fourth proportional to 266,005.80, 399,267.90 and 133,036.20 is: 199,683.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,005.80 : 399,267.90 = 133,036.20 : x
  2. Step 2: Convert to fraction form
    266,005.80/399,267.90 = 133,036.20/x
  3. Step 3: Cross multiply
    266,005.80x = 399,267.90 × 133,036.20
  4. Step 4: Simplify right side
    266,005.80x = 53,117,084,197.98
  5. Step 5: Solve for x
    x = 53,117,084,197.98/266,005.80
  6. Step 6: Final answer
    x = 199,683.93

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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.