Home / 211,415.40-317,166.30-71,188.20

Finding the Fourth Proportional to 211,415.40, 317,166.30 and 71,188.20

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Solution

The fourth proportional to 211,415.40, 317,166.30 and 71,188.20 is: 106,796.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,415.40 : 317,166.30 = 71,188.20 : x
  2. Step 2: Convert to fraction form
    211,415.40/317,166.30 = 71,188.20/x
  3. Step 3: Cross multiply
    211,415.40x = 317,166.30 × 71,188.20
  4. Step 4: Simplify right side
    211,415.40x = 22,578,497,997.66
  5. Step 5: Solve for x
    x = 22,578,497,997.66/211,415.40
  6. Step 6: Final answer
    x = 106,796.85

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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.