Home / 239,213.20-358,868.40-81,457.60

Finding the Fourth Proportional to 239,213.20, 358,868.40 and 81,457.60

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Solution

The fourth proportional to 239,213.20, 358,868.40 and 81,457.60 is: 122,202.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,213.20 : 358,868.40 = 81,457.60 : x
  2. Step 2: Convert to fraction form
    239,213.20/358,868.40 = 81,457.60/x
  3. Step 3: Cross multiply
    239,213.20x = 358,868.40 × 81,457.60
  4. Step 4: Simplify right side
    239,213.20x = 29,232,558,579.84
  5. Step 5: Solve for x
    x = 29,232,558,579.84/239,213.20
  6. Step 6: Final answer
    x = 122,202.95

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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.