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Finding the Fourth Proportional to 341,143.40, 512,136.30 and 214,783.40

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Solution

The fourth proportional to 341,143.40, 512,136.30 and 214,783.40 is: 322,440.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,143.40 : 512,136.30 = 214,783.40 : x
  2. Step 2: Convert to fraction form
    341,143.40/512,136.30 = 214,783.40/x
  3. Step 3: Cross multiply
    341,143.40x = 512,136.30 × 214,783.40
  4. Step 4: Simplify right side
    341,143.40x = 109,998,375,777.42
  5. Step 5: Solve for x
    x = 109,998,375,777.42/341,143.40
  6. Step 6: Final answer
    x = 322,440.29

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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.