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Finding the Fourth Proportional to 395,164.80, 592,765.44 and 128,924.80

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Solution

The fourth proportional to 395,164.80, 592,765.44 and 128,924.80 is: 193,393.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,164.80 : 592,765.44 = 128,924.80 : x
  2. Step 2: Convert to fraction form
    395,164.80/592,765.44 = 128,924.80/x
  3. Step 3: Cross multiply
    395,164.80x = 592,765.44 × 128,924.80
  4. Step 4: Simplify right side
    395,164.80x = 76,422,165,798.91
  5. Step 5: Solve for x
    x = 76,422,165,798.91/395,164.80
  6. Step 6: Final answer
    x = 193,393.15

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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.