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Finding the Fourth Proportional to 342,016.63, 512,748.23 and 142,486.90

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Solution

The fourth proportional to 342,016.63, 512,748.23 and 142,486.90 is: 213,615.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,016.63 : 512,748.23 = 142,486.90 : x
  2. Step 2: Convert to fraction form
    342,016.63/512,748.23 = 142,486.90/x
  3. Step 3: Cross multiply
    342,016.63x = 512,748.23 × 142,486.90
  4. Step 4: Simplify right side
    342,016.63x = 73,059,903,778.88
  5. Step 5: Solve for x
    x = 73,059,903,778.88/342,016.63
  6. Step 6: Final answer
    x = 213,615.06

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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.