Home / 211,355.28-317,074.36-78,236.56

Finding the Fourth Proportional to 211,355.28, 317,074.36 and 78,236.56

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Solution

The fourth proportional to 211,355.28, 317,074.36 and 78,236.56 is: 117,370.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,355.28 : 317,074.36 = 78,236.56 : x
  2. Step 2: Convert to fraction form
    211,355.28/317,074.36 = 78,236.56/x
  3. Step 3: Cross multiply
    211,355.28x = 317,074.36 × 78,236.56
  4. Step 4: Simplify right side
    211,355.28x = 24,806,807,190.60
  5. Step 5: Solve for x
    x = 24,806,807,190.60/211,355.28
  6. Step 6: Final answer
    x = 117,370.18

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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.