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Finding the Fourth Proportional to 393,303.87, 589,954.10 and 108,993.60

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Solution

The fourth proportional to 393,303.87, 589,954.10 and 108,993.60 is: 163,489.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,303.87 : 589,954.10 = 108,993.60 : x
  2. Step 2: Convert to fraction form
    393,303.87/589,954.10 = 108,993.60/x
  3. Step 3: Cross multiply
    393,303.87x = 589,954.10 × 108,993.60
  4. Step 4: Simplify right side
    393,303.87x = 64,301,221,193.76
  5. Step 5: Solve for x
    x = 64,301,221,193.76/393,303.87
  6. Step 6: Final answer
    x = 163,489.93

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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.