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Finding the Fourth Proportional to 571,727.28, 857,714.76 and 172,334.64

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Solution

The fourth proportional to 571,727.28, 857,714.76 and 172,334.64 is: 258,539.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,727.28 : 857,714.76 = 172,334.64 : x
  2. Step 2: Convert to fraction form
    571,727.28/857,714.76 = 172,334.64/x
  3. Step 3: Cross multiply
    571,727.28x = 857,714.76 × 172,334.64
  4. Step 4: Simplify right side
    571,727.28x = 147,813,964,387.29
  5. Step 5: Solve for x
    x = 147,813,964,387.29/571,727.28
  6. Step 6: Final answer
    x = 258,539.29

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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.