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Finding the Fourth Proportional to 341,999.39, 512,722.35 and 142,469.66

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Solution

The fourth proportional to 341,999.39, 512,722.35 and 142,469.66 is: 213,589.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,999.39 : 512,722.35 = 142,469.66 : x
  2. Step 2: Convert to fraction form
    341,999.39/512,722.35 = 142,469.66/x
  3. Step 3: Cross multiply
    341,999.39x = 512,722.35 × 142,469.66
  4. Step 4: Simplify right side
    341,999.39x = 73,047,376,315.29
  5. Step 5: Solve for x
    x = 73,047,376,315.29/341,999.39
  6. Step 6: Final answer
    x = 213,589.20

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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.