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Finding the Fourth Proportional to 395,168.24, 545,336.52 and 225,412.40

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Solution

The fourth proportional to 395,168.24, 545,336.52 and 225,412.40 is: 311,071.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,168.24 : 545,336.52 = 225,412.40 : x
  2. Step 2: Convert to fraction form
    395,168.24/545,336.52 = 225,412.40/x
  3. Step 3: Cross multiply
    395,168.24x = 545,336.52 × 225,412.40
  4. Step 4: Simplify right side
    395,168.24x = 122,925,613,780.85
  5. Step 5: Solve for x
    x = 122,925,613,780.85/395,168.24
  6. Step 6: Final answer
    x = 311,071.59

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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.