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Finding the Fourth Proportional to 316,809.05, 475,155.87 and 127,261.76

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Solution

The fourth proportional to 316,809.05, 475,155.87 and 127,261.76 is: 190,869.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,809.05 : 475,155.87 = 127,261.76 : x
  2. Step 2: Convert to fraction form
    316,809.05/475,155.87 = 127,261.76/x
  3. Step 3: Cross multiply
    316,809.05x = 475,155.87 × 127,261.76
  4. Step 4: Simplify right side
    316,809.05x = 60,469,169,914.75
  5. Step 5: Solve for x
    x = 60,469,169,914.75/316,809.05
  6. Step 6: Final answer
    x = 190,869.46

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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.