Home / 211,679.28-317,499.60-71,439.12

Finding the Fourth Proportional to 211,679.28, 317,499.60 and 71,439.12

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Solution

The fourth proportional to 211,679.28, 317,499.60 and 71,439.12 is: 107,152.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,679.28 : 317,499.60 = 71,439.12 : x
  2. Step 2: Convert to fraction form
    211,679.28/317,499.60 = 71,439.12/x
  3. Step 3: Cross multiply
    211,679.28x = 317,499.60 × 71,439.12
  4. Step 4: Simplify right side
    211,679.28x = 22,681,892,024.35
  5. Step 5: Solve for x
    x = 22,681,892,024.35/211,679.28
  6. Step 6: Final answer
    x = 107,152.16

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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.