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Finding the Fourth Proportional to 266,934.56, 400,389.35 and 77,389.29

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Solution

The fourth proportional to 266,934.56, 400,389.35 and 77,389.29 is: 116,080.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,934.56 : 400,389.35 = 77,389.29 : x
  2. Step 2: Convert to fraction form
    266,934.56/400,389.35 = 77,389.29/x
  3. Step 3: Cross multiply
    266,934.56x = 400,389.35 × 77,389.29
  4. Step 4: Simplify right side
    266,934.56x = 30,985,847,133.12
  5. Step 5: Solve for x
    x = 30,985,847,133.12/266,934.56
  6. Step 6: Final answer
    x = 116,080.31

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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.