Home / 211,529.16-317,284.56-71,287.20

Finding the Fourth Proportional to 211,529.16, 317,284.56 and 71,287.20

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Solution

The fourth proportional to 211,529.16, 317,284.56 and 71,287.20 is: 106,927.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,529.16 : 317,284.56 = 71,287.20 : x
  2. Step 2: Convert to fraction form
    211,529.16/317,284.56 = 71,287.20/x
  3. Step 3: Cross multiply
    211,529.16x = 317,284.56 × 71,287.20
  4. Step 4: Simplify right side
    211,529.16x = 22,618,327,885.63
  5. Step 5: Solve for x
    x = 22,618,327,885.63/211,529.16
  6. Step 6: Final answer
    x = 106,927.71

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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.