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Finding the Fourth Proportional to 266,075.88, 398,767.20 and 108,119.64

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Solution

The fourth proportional to 266,075.88, 398,767.20 and 108,119.64 is: 162,038.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,075.88 : 398,767.20 = 108,119.64 : x
  2. Step 2: Convert to fraction form
    266,075.88/398,767.20 = 108,119.64/x
  3. Step 3: Cross multiply
    266,075.88x = 398,767.20 × 108,119.64
  4. Step 4: Simplify right side
    266,075.88x = 43,114,566,107.81
  5. Step 5: Solve for x
    x = 43,114,566,107.81/266,075.88
  6. Step 6: Final answer
    x = 162,038.61

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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.