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Finding the Fourth Proportional to 215,288.99, 322,724.00 and 102,940.07

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Solution

The fourth proportional to 215,288.99, 322,724.00 and 102,940.07 is: 154,309.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,288.99 : 322,724.00 = 102,940.07 : x
  2. Step 2: Convert to fraction form
    215,288.99/322,724.00 = 102,940.07/x
  3. Step 3: Cross multiply
    215,288.99x = 322,724.00 × 102,940.07
  4. Step 4: Simplify right side
    215,288.99x = 33,221,229,215.37
  5. Step 5: Solve for x
    x = 33,221,229,215.37/215,288.99
  6. Step 6: Final answer
    x = 154,309.93

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1.5x scale

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.