Home / 209,015,015.12-288,015,705.28-161,684,671.59

Finding the Fourth Proportional to 209,015,015.12, 288,015,705.28 and 161,684,671.59

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Solution

The fourth proportional to 209,015,015.12, 288,015,705.28 and 161,684,671.59 is: 222,796,073.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,015,015.12 : 288,015,705.28 = 161,684,671.59 : x
  2. Step 2: Convert to fraction form
    209,015,015.12/288,015,705.28 = 161,684,671.59/x
  3. Step 3: Cross multiply
    209,015,015.12x = 288,015,705.28 × 161,684,671.59
  4. Step 4: Simplify right side
    209,015,015.12x = 46,567,724,721,159,520
  5. Step 5: Solve for x
    x = 46,567,724,721,159,520/209,015,015.12
  6. Step 6: Final answer
    x = 222,796,073.74

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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.