Home / 306,118.30-422,557.86-229,857.70

Finding the Fourth Proportional to 306,118.30, 422,557.86 and 229,857.70

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Solution

The fourth proportional to 306,118.30, 422,557.86 and 229,857.70 is: 317,289.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,118.30 : 422,557.86 = 229,857.70 : x
  2. Step 2: Convert to fraction form
    306,118.30/422,557.86 = 229,857.70/x
  3. Step 3: Cross multiply
    306,118.30x = 422,557.86 × 229,857.70
  4. Step 4: Simplify right side
    306,118.30x = 97,128,177,816.52
  5. Step 5: Solve for x
    x = 97,128,177,816.52/306,118.30
  6. Step 6: Final answer
    x = 317,289.68

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1.5x scale

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.