Home / 213,207-319,812.12-72,966.84

Finding the Fourth Proportional to 213,207, 319,812.12 and 72,966.84

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Solution

The fourth proportional to 213,207, 319,812.12 and 72,966.84 is: 109,450.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,207 : 319,812.12 = 72,966.84 : x
  2. Step 2: Convert to fraction form
    213,207/319,812.12 = 72,966.84/x
  3. Step 3: Cross multiply
    213,207x = 319,812.12 × 72,966.84
  4. Step 4: Simplify right side
    213,207x = 23,335,679,790.10
  5. Step 5: Solve for x
    x = 23,335,679,790.10/213,207
  6. Step 6: Final answer
    x = 109,450.81

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.