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Finding the Fourth Proportional to 266,112,052.80, 399,168,079.20 and 266,112,052.80

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Solution

The fourth proportional to 266,112,052.80, 399,168,079.20 and 266,112,052.80 is: 399,168,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,112,052.80 : 399,168,079.20 = 266,112,052.80 : x
  2. Step 2: Convert to fraction form
    266,112,052.80/399,168,079.20 = 266,112,052.80/x
  3. Step 3: Cross multiply
    266,112,052.80x = 399,168,079.20 × 266,112,052.80
  4. Step 4: Simplify right side
    266,112,052.80x = 106,223,436,968,144,976
  5. Step 5: Solve for x
    x = 106,223,436,968,144,976/266,112,052.80
  6. Step 6: Final answer
    x = 399,168,079.20

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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.