Home / 347,136.36-521,000.39-136,921.92

Finding the Fourth Proportional to 347,136.36, 521,000.39 and 136,921.92

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Solution

The fourth proportional to 347,136.36, 521,000.39 and 136,921.92 is: 205,499.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,136.36 : 521,000.39 = 136,921.92 : x
  2. Step 2: Convert to fraction form
    347,136.36/521,000.39 = 136,921.92/x
  3. Step 3: Cross multiply
    347,136.36x = 521,000.39 × 136,921.92
  4. Step 4: Simplify right side
    347,136.36x = 71,336,373,719.55
  5. Step 5: Solve for x
    x = 71,336,373,719.55/347,136.36
  6. Step 6: Final answer
    x = 205,499.57

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1.5x scale

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.