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Finding the Fourth Proportional to 316,189.31, 474,284.77 and 129,200.81

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Solution

The fourth proportional to 316,189.31, 474,284.77 and 129,200.81 is: 193,801.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,189.31 : 474,284.77 = 129,200.81 : x
  2. Step 2: Convert to fraction form
    316,189.31/474,284.77 = 129,200.81/x
  3. Step 3: Cross multiply
    316,189.31x = 474,284.77 × 129,200.81
  4. Step 4: Simplify right side
    316,189.31x = 61,277,973,760.24
  5. Step 5: Solve for x
    x = 61,277,973,760.24/316,189.31
  6. Step 6: Final answer
    x = 193,801.54

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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.