Home / 211,784.34-317,719.71-71,539.86

Finding the Fourth Proportional to 211,784.34, 317,719.71 and 71,539.86

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Solution

The fourth proportional to 211,784.34, 317,719.71 and 71,539.86 is: 107,324.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,784.34 : 317,719.71 = 71,539.86 : x
  2. Step 2: Convert to fraction form
    211,784.34/317,719.71 = 71,539.86/x
  3. Step 3: Cross multiply
    211,784.34x = 317,719.71 × 71,539.86
  4. Step 4: Simplify right side
    211,784.34x = 22,729,623,572.64
  5. Step 5: Solve for x
    x = 22,729,623,572.64/211,784.34
  6. Step 6: Final answer
    x = 107,324.38

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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.