Home / 211,425.20-317,166.60-78,273.20

Finding the Fourth Proportional to 211,425.20, 317,166.60 and 78,273.20

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Solution

The fourth proportional to 211,425.20, 317,166.60 and 78,273.20 is: 117,420.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,425.20 : 317,166.60 = 78,273.20 : x
  2. Step 2: Convert to fraction form
    211,425.20/317,166.60 = 78,273.20/x
  3. Step 3: Cross multiply
    211,425.20x = 317,166.60 × 78,273.20
  4. Step 4: Simplify right side
    211,425.20x = 24,825,644,715.12
  5. Step 5: Solve for x
    x = 24,825,644,715.12/211,425.20
  6. Step 6: Final answer
    x = 117,420.46

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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.