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Finding the Fourth Proportional to 572,958.36, 859,141.89 and 257,145.03

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Solution

The fourth proportional to 572,958.36, 859,141.89 and 257,145.03 is: 385,584.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,958.36 : 859,141.89 = 257,145.03 : x
  2. Step 2: Convert to fraction form
    572,958.36/859,141.89 = 257,145.03/x
  3. Step 3: Cross multiply
    572,958.36x = 859,141.89 × 257,145.03
  4. Step 4: Simplify right side
    572,958.36x = 220,924,067,078.31
  5. Step 5: Solve for x
    x = 220,924,067,078.31/572,958.36
  6. Step 6: Final answer
    x = 385,584.86

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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.