Home / 262,434.60-393,383.10-129,109.80

Finding the Fourth Proportional to 262,434.60, 393,383.10 and 129,109.80

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Solution

The fourth proportional to 262,434.60, 393,383.10 and 129,109.80 is: 193,532.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,434.60 : 393,383.10 = 129,109.80 : x
  2. Step 2: Convert to fraction form
    262,434.60/393,383.10 = 129,109.80/x
  3. Step 3: Cross multiply
    262,434.60x = 393,383.10 × 129,109.80
  4. Step 4: Simplify right side
    262,434.60x = 50,789,613,364.38
  5. Step 5: Solve for x
    x = 50,789,613,364.38/262,434.60
  6. Step 6: Final answer
    x = 193,532.46

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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.