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Finding the Fourth Proportional to 571,967.30, 857,957.07 and 172,611.65

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Solution

The fourth proportional to 571,967.30, 857,957.07 and 172,611.65 is: 258,919.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,967.30 : 857,957.07 = 172,611.65 : x
  2. Step 2: Convert to fraction form
    571,967.30/857,957.07 = 172,611.65/x
  3. Step 3: Cross multiply
    571,967.30x = 857,957.07 × 172,611.65
  4. Step 4: Simplify right side
    571,967.30x = 148,093,380,329.02
  5. Step 5: Solve for x
    x = 148,093,380,329.02/571,967.30
  6. Step 6: Final answer
    x = 258,919.32

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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.