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Finding the Fourth Proportional to 217,378.40, 325,630.20 and 146,519.60

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Solution

The fourth proportional to 217,378.40, 325,630.20 and 146,519.60 is: 219,484.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,378.40 : 325,630.20 = 146,519.60 : x
  2. Step 2: Convert to fraction form
    217,378.40/325,630.20 = 146,519.60/x
  3. Step 3: Cross multiply
    217,378.40x = 325,630.20 × 146,519.60
  4. Step 4: Simplify right side
    217,378.40x = 47,711,206,651.92
  5. Step 5: Solve for x
    x = 47,711,206,651.92/217,378.40
  6. Step 6: Final answer
    x = 219,484.58

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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.