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Finding the Fourth Proportional to 542,968.80, 816,202.80 and 386,282.40

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Solution

The fourth proportional to 542,968.80, 816,202.80 and 386,282.40 is: 580,668.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,968.80 : 816,202.80 = 386,282.40 : x
  2. Step 2: Convert to fraction form
    542,968.80/816,202.80 = 386,282.40/x
  3. Step 3: Cross multiply
    542,968.80x = 816,202.80 × 386,282.40
  4. Step 4: Simplify right side
    542,968.80x = 315,284,776,470.72
  5. Step 5: Solve for x
    x = 315,284,776,470.72/542,968.80
  6. Step 6: Final answer
    x = 580,668.31

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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.