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Finding the Fourth Proportional to 243,069.30, 364,713.30 and 85,410.90

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Solution

The fourth proportional to 243,069.30, 364,713.30 and 85,410.90 is: 128,154.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,069.30 : 364,713.30 = 85,410.90 : x
  2. Step 2: Convert to fraction form
    243,069.30/364,713.30 = 85,410.90/x
  3. Step 3: Cross multiply
    243,069.30x = 364,713.30 × 85,410.90
  4. Step 4: Simplify right side
    243,069.30x = 31,150,491,194.97
  5. Step 5: Solve for x
    x = 31,150,491,194.97/243,069.30
  6. Step 6: Final answer
    x = 128,154.77

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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.