Home / 209,011.72-288,239.70-161,189.32

Finding the Fourth Proportional to 209,011.72, 288,239.70 and 161,189.32

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Solution

The fourth proportional to 209,011.72, 288,239.70 and 161,189.32 is: 222,289.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,011.72 : 288,239.70 = 161,189.32 : x
  2. Step 2: Convert to fraction form
    209,011.72/288,239.70 = 161,189.32/x
  3. Step 3: Cross multiply
    209,011.72x = 288,239.70 × 161,189.32
  4. Step 4: Simplify right side
    209,011.72x = 46,461,161,240.00
  5. Step 5: Solve for x
    x = 46,461,161,240.00/209,011.72
  6. Step 6: Final answer
    x = 222,289.74

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.