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Finding the Fourth Proportional to 395,084.32, 592,645.60 and 128,844.48

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Solution

The fourth proportional to 395,084.32, 592,645.60 and 128,844.48 is: 193,272.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,084.32 : 592,645.60 = 128,844.48 : x
  2. Step 2: Convert to fraction form
    395,084.32/592,645.60 = 128,844.48/x
  3. Step 3: Cross multiply
    395,084.32x = 592,645.60 × 128,844.48
  4. Step 4: Simplify right side
    395,084.32x = 76,359,114,156.29
  5. Step 5: Solve for x
    x = 76,359,114,156.29/395,084.32
  6. Step 6: Final answer
    x = 193,272.96

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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.