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Finding the Fourth Proportional to 217,085.60, 325,628.40 and 201,879.20

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Solution

The fourth proportional to 217,085.60, 325,628.40 and 201,879.20 is: 302,818.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,085.60 : 325,628.40 = 201,879.20 : x
  2. Step 2: Convert to fraction form
    217,085.60/325,628.40 = 201,879.20/x
  3. Step 3: Cross multiply
    217,085.60x = 325,628.40 × 201,879.20
  4. Step 4: Simplify right side
    217,085.60x = 65,737,600,889.28
  5. Step 5: Solve for x
    x = 65,737,600,889.28/217,085.60
  6. Step 6: Final answer
    x = 302,818.80

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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.