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Finding the Fourth Proportional to 291,672.80, 437,518.96 and 81,293.12

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Solution

The fourth proportional to 291,672.80, 437,518.96 and 81,293.12 is: 121,942.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,672.80 : 437,518.96 = 81,293.12 : x
  2. Step 2: Convert to fraction form
    291,672.80/437,518.96 = 81,293.12/x
  3. Step 3: Cross multiply
    291,672.80x = 437,518.96 × 81,293.12
  4. Step 4: Simplify right side
    291,672.80x = 35,567,281,317.56
  5. Step 5: Solve for x
    x = 35,567,281,317.56/291,672.80
  6. Step 6: Final answer
    x = 121,942.40

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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.