Home / 215,315.64-322,985.34-82,206.72

Finding the Fourth Proportional to 215,315.64, 322,985.34 and 82,206.72

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Solution

The fourth proportional to 215,315.64, 322,985.34 and 82,206.72 is: 123,314.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,315.64 : 322,985.34 = 82,206.72 : x
  2. Step 2: Convert to fraction form
    215,315.64/322,985.34 = 82,206.72/x
  3. Step 3: Cross multiply
    215,315.64x = 322,985.34 × 82,206.72
  4. Step 4: Simplify right side
    215,315.64x = 26,551,565,409.48
  5. Step 5: Solve for x
    x = 26,551,565,409.48/215,315.64
  6. Step 6: Final answer
    x = 123,314.62

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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.