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Finding the Fourth Proportional to 395,528.91, 545,927.54 and 225,861.45

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Solution

The fourth proportional to 395,528.91, 545,927.54 and 225,861.45 is: 311,744.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,528.91 : 545,927.54 = 225,861.45 : x
  2. Step 2: Convert to fraction form
    395,528.91/545,927.54 = 225,861.45/x
  3. Step 3: Cross multiply
    395,528.91x = 545,927.54 × 225,861.45
  4. Step 4: Simplify right side
    395,528.91x = 123,303,985,779.33
  5. Step 5: Solve for x
    x = 123,303,985,779.33/395,528.91
  6. Step 6: Final answer
    x = 311,744.56

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Why These Related Problems?

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