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Finding the Fourth Proportional to 395,190.72, 545,366.88 and 225,434.88

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Solution

The fourth proportional to 395,190.72, 545,366.88 and 225,434.88 is: 311,102.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,190.72 : 545,366.88 = 225,434.88 : x
  2. Step 2: Convert to fraction form
    395,190.72/545,366.88 = 225,434.88/x
  3. Step 3: Cross multiply
    395,190.72x = 545,366.88 × 225,434.88
  4. Step 4: Simplify right side
    395,190.72x = 122,944,717,148.77
  5. Step 5: Solve for x
    x = 122,944,717,148.77/395,190.72
  6. Step 6: Final answer
    x = 311,102.24

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1.5x scale

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.