Home / 209,012.72-288,241.08-161,190.32

Finding the Fourth Proportional to 209,012.72, 288,241.08 and 161,190.32

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Solution

The fourth proportional to 209,012.72, 288,241.08 and 161,190.32 is: 222,291.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,012.72 : 288,241.08 = 161,190.32 : x
  2. Step 2: Convert to fraction form
    209,012.72/288,241.08 = 161,190.32/x
  3. Step 3: Cross multiply
    209,012.72x = 288,241.08 × 161,190.32
  4. Step 4: Simplify right side
    209,012.72x = 46,461,671,922.35
  5. Step 5: Solve for x
    x = 46,461,671,922.35/209,012.72
  6. Step 6: Final answer
    x = 222,291.12

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1.5x scale

Why These Related Problems?

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