Home / 815,167.80-1,222,784.84-207,971.89

Finding the Fourth Proportional to 815,167.80, 1,222,784.84 and 207,971.89

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Solution

The fourth proportional to 815,167.80, 1,222,784.84 and 207,971.89 is: 311,966.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,167.80 : 1,222,784.84 = 207,971.89 : x
  2. Step 2: Convert to fraction form
    815,167.80/1,222,784.84 = 207,971.89/x
  3. Step 3: Cross multiply
    815,167.80x = 1,222,784.84 × 207,971.89
  4. Step 4: Simplify right side
    815,167.80x = 254,304,871,701.12
  5. Step 5: Solve for x
    x = 254,304,871,701.12/815,167.80
  6. Step 6: Final answer
    x = 311,966.29

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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.