Home / 327,438.10-491,157.28-147,313.17

Finding the Fourth Proportional to 327,438.10, 491,157.28 and 147,313.17

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Solution

The fourth proportional to 327,438.10, 491,157.28 and 147,313.17 is: 220,969.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,438.10 : 491,157.28 = 147,313.17 : x
  2. Step 2: Convert to fraction form
    327,438.10/491,157.28 = 147,313.17/x
  3. Step 3: Cross multiply
    327,438.10x = 491,157.28 × 147,313.17
  4. Step 4: Simplify right side
    327,438.10x = 72,353,937,036.58
  5. Step 5: Solve for x
    x = 72,353,937,036.58/327,438.10
  6. Step 6: Final answer
    x = 220,969.81

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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.