Home / 211,982.19-318,005.54-131,955.40

Finding the Fourth Proportional to 211,982.19, 318,005.54 and 131,955.40

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Solution

The fourth proportional to 211,982.19, 318,005.54 and 131,955.40 is: 197,953.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,982.19 : 318,005.54 = 131,955.40 : x
  2. Step 2: Convert to fraction form
    211,982.19/318,005.54 = 131,955.40/x
  3. Step 3: Cross multiply
    211,982.19x = 318,005.54 × 131,955.40
  4. Step 4: Simplify right side
    211,982.19x = 41,962,548,232.92
  5. Step 5: Solve for x
    x = 41,962,548,232.92/211,982.19
  6. Step 6: Final answer
    x = 197,953.18

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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.