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Finding the Fourth Proportional to 266,138.64, 367,272.05 and 145,280.03

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Solution

The fourth proportional to 266,138.64, 367,272.05 and 145,280.03 is: 200,486.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,138.64 : 367,272.05 = 145,280.03 : x
  2. Step 2: Convert to fraction form
    266,138.64/367,272.05 = 145,280.03/x
  3. Step 3: Cross multiply
    266,138.64x = 367,272.05 × 145,280.03
  4. Step 4: Simplify right side
    266,138.64x = 53,357,291,879.40
  5. Step 5: Solve for x
    x = 53,357,291,879.40/266,138.64
  6. Step 6: Final answer
    x = 200,486.83

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.