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Finding the Fourth Proportional to 354,923.80, 490,015.92 and 225,935.08

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Solution

The fourth proportional to 354,923.80, 490,015.92 and 225,935.08 is: 311,931.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,923.80 : 490,015.92 = 225,935.08 : x
  2. Step 2: Convert to fraction form
    354,923.80/490,015.92 = 225,935.08/x
  3. Step 3: Cross multiply
    354,923.80x = 490,015.92 × 225,935.08
  4. Step 4: Simplify right side
    354,923.80x = 110,711,786,086.47
  5. Step 5: Solve for x
    x = 110,711,786,086.47/354,923.80
  6. Step 6: Final answer
    x = 311,931.14

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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.