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Finding the Fourth Proportional to 217,388.40, 325,645.20 and 146,529.60

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Solution

The fourth proportional to 217,388.40, 325,645.20 and 146,529.60 is: 219,499.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,388.40 : 325,645.20 = 146,529.60 : x
  2. Step 2: Convert to fraction form
    217,388.40/325,645.20 = 146,529.60/x
  3. Step 3: Cross multiply
    217,388.40x = 325,645.20 × 146,529.60
  4. Step 4: Simplify right side
    217,388.40x = 47,716,660,897.92
  5. Step 5: Solve for x
    x = 47,716,660,897.92/217,388.40
  6. Step 6: Final answer
    x = 219,499.57

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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.