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Finding the Fourth Proportional to 341,992.80, 512,989.20 and 142,246.80

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Solution

The fourth proportional to 341,992.80, 512,989.20 and 142,246.80 is: 213,370.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,992.80 : 512,989.20 = 142,246.80 : x
  2. Step 2: Convert to fraction form
    341,992.80/512,989.20 = 142,246.80/x
  3. Step 3: Cross multiply
    341,992.80x = 512,989.20 × 142,246.80
  4. Step 4: Simplify right side
    341,992.80x = 72,971,072,134.56
  5. Step 5: Solve for x
    x = 72,971,072,134.56/341,992.80
  6. Step 6: Final answer
    x = 213,370.20

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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.