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Finding the Fourth Proportional to 447,993.60, 672,090 and 163,683.60

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Solution

The fourth proportional to 447,993.60, 672,090 and 163,683.60 is: 245,561.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,993.60 : 672,090 = 163,683.60 : x
  2. Step 2: Convert to fraction form
    447,993.60/672,090 = 163,683.60/x
  3. Step 3: Cross multiply
    447,993.60x = 672,090 × 163,683.60
  4. Step 4: Simplify right side
    447,993.60x = 110,010,110,724
  5. Step 5: Solve for x
    x = 110,010,110,724/447,993.60
  6. Step 6: Final answer
    x = 245,561.79

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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.