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Finding the Fourth Proportional to 266,388.08, 399,582.38 and 74,254.84

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Solution

The fourth proportional to 266,388.08, 399,582.38 and 74,254.84 is: 111,382.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,388.08 : 399,582.38 = 74,254.84 : x
  2. Step 2: Convert to fraction form
    266,388.08/399,582.38 = 74,254.84/x
  3. Step 3: Cross multiply
    266,388.08x = 399,582.38 × 74,254.84
  4. Step 4: Simplify right side
    266,388.08x = 29,670,925,693.72
  5. Step 5: Solve for x
    x = 29,670,925,693.72/266,388.08
  6. Step 6: Final answer
    x = 111,382.33

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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.