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Finding the Fourth Proportional to 341,998.38, 512,720.84 and 142,468.64

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Solution

The fourth proportional to 341,998.38, 512,720.84 and 142,468.64 is: 213,587.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,998.38 : 512,720.84 = 142,468.64 : x
  2. Step 2: Convert to fraction form
    341,998.38/512,720.84 = 142,468.64/x
  3. Step 3: Cross multiply
    341,998.38x = 512,720.84 × 142,468.64
  4. Step 4: Simplify right side
    341,998.38x = 73,046,640,774.46
  5. Step 5: Solve for x
    x = 73,046,640,774.46/341,998.38
  6. Step 6: Final answer
    x = 213,587.68

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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.