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Finding the Fourth Proportional to 395,780.88, 593,677.80 and 115,313.52

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Solution

The fourth proportional to 395,780.88, 593,677.80 and 115,313.52 is: 172,972.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,780.88 : 593,677.80 = 115,313.52 : x
  2. Step 2: Convert to fraction form
    395,780.88/593,677.80 = 115,313.52/x
  3. Step 3: Cross multiply
    395,780.88x = 593,677.80 × 115,313.52
  4. Step 4: Simplify right side
    395,780.88x = 68,459,076,863.86
  5. Step 5: Solve for x
    x = 68,459,076,863.86/395,780.88
  6. Step 6: Final answer
    x = 172,972.17

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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.