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Finding the Fourth Proportional to 303,465.20, 418,719.45 and 174,378.73

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Solution

The fourth proportional to 303,465.20, 418,719.45 and 174,378.73 is: 240,606.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,465.20 : 418,719.45 = 174,378.73 : x
  2. Step 2: Convert to fraction form
    303,465.20/418,719.45 = 174,378.73/x
  3. Step 3: Cross multiply
    303,465.20x = 418,719.45 × 174,378.73
  4. Step 4: Simplify right side
    303,465.20x = 73,015,765,917.30
  5. Step 5: Solve for x
    x = 73,015,765,917.30/303,465.20
  6. Step 6: Final answer
    x = 240,606.72

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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.