Home / 221,956.48-306,318.69-135,915.04

Finding the Fourth Proportional to 221,956.48, 306,318.69 and 135,915.04

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Solution

The fourth proportional to 221,956.48, 306,318.69 and 135,915.04 is: 187,574.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,956.48 : 306,318.69 = 135,915.04 : x
  2. Step 2: Convert to fraction form
    221,956.48/306,318.69 = 135,915.04/x
  3. Step 3: Cross multiply
    221,956.48x = 306,318.69 × 135,915.04
  4. Step 4: Simplify right side
    221,956.48x = 41,633,317,004.10
  5. Step 5: Solve for x
    x = 41,633,317,004.10/221,956.48
  6. Step 6: Final answer
    x = 187,574.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.