Home / 207,938.20-312,017.19-147,538.81

Finding the Fourth Proportional to 207,938.20, 312,017.19 and 147,538.81

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Solution

The fourth proportional to 207,938.20, 312,017.19 and 147,538.81 is: 221,386.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,938.20 : 312,017.19 = 147,538.81 : x
  2. Step 2: Convert to fraction form
    207,938.20/312,017.19 = 147,538.81/x
  3. Step 3: Cross multiply
    207,938.20x = 312,017.19 × 147,538.81
  4. Step 4: Simplify right side
    207,938.20x = 46,034,644,912.14
  5. Step 5: Solve for x
    x = 46,034,644,912.14/207,938.20
  6. Step 6: Final answer
    x = 221,386.19

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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.