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Finding the Fourth Proportional to 266,313.60, 399,130.20 and 108,363.60

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Solution

The fourth proportional to 266,313.60, 399,130.20 and 108,363.60 is: 162,406.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,313.60 : 399,130.20 = 108,363.60 : x
  2. Step 2: Convert to fraction form
    266,313.60/399,130.20 = 108,363.60/x
  3. Step 3: Cross multiply
    266,313.60x = 399,130.20 × 108,363.60
  4. Step 4: Simplify right side
    266,313.60x = 43,251,185,340.72
  5. Step 5: Solve for x
    x = 43,251,185,340.72/266,313.60
  6. Step 6: Final answer
    x = 162,406.97

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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.