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Finding the Fourth Proportional to 395,789.32, 546,259.44 and 300,134.80

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Solution

The fourth proportional to 395,789.32, 546,259.44 and 300,134.80 is: 414,239.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,789.32 : 546,259.44 = 300,134.80 : x
  2. Step 2: Convert to fraction form
    395,789.32/546,259.44 = 300,134.80/x
  3. Step 3: Cross multiply
    395,789.32x = 546,259.44 × 300,134.80
  4. Step 4: Simplify right side
    395,789.32x = 163,951,467,772.51
  5. Step 5: Solve for x
    x = 163,951,467,772.51/395,789.32
  6. Step 6: Final answer
    x = 414,239.24

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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.