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Finding the Fourth Proportional to 189,464.80, 284,326.80 and 105,224.80

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Solution

The fourth proportional to 189,464.80, 284,326.80 and 105,224.80 is: 157,909.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,464.80 : 284,326.80 = 105,224.80 : x
  2. Step 2: Convert to fraction form
    189,464.80/284,326.80 = 105,224.80/x
  3. Step 3: Cross multiply
    189,464.80x = 284,326.80 × 105,224.80
  4. Step 4: Simplify right side
    189,464.80x = 29,918,230,664.64
  5. Step 5: Solve for x
    x = 29,918,230,664.64/189,464.80
  6. Step 6: Final answer
    x = 157,909.18

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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.