Home / 211,527.20-317,305.20-67,421.60

Finding the Fourth Proportional to 211,527.20, 317,305.20 and 67,421.60

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Solution

The fourth proportional to 211,527.20, 317,305.20 and 67,421.60 is: 101,136.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,527.20 : 317,305.20 = 67,421.60 : x
  2. Step 2: Convert to fraction form
    211,527.20/317,305.20 = 67,421.60/x
  3. Step 3: Cross multiply
    211,527.20x = 317,305.20 × 67,421.60
  4. Step 4: Simplify right side
    211,527.20x = 21,393,224,272.32
  5. Step 5: Solve for x
    x = 21,393,224,272.32/211,527.20
  6. Step 6: Final answer
    x = 101,136.99

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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.