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Finding the Fourth Proportional to 471,969.55, 708,056.84 and 172,449.68

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Solution

The fourth proportional to 471,969.55, 708,056.84 and 172,449.68 is: 258,711.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,969.55 : 708,056.84 = 172,449.68 : x
  2. Step 2: Convert to fraction form
    471,969.55/708,056.84 = 172,449.68/x
  3. Step 3: Cross multiply
    471,969.55x = 708,056.84 × 172,449.68
  4. Step 4: Simplify right side
    471,969.55x = 122,104,172,370.65
  5. Step 5: Solve for x
    x = 122,104,172,370.65/471,969.55
  6. Step 6: Final answer
    x = 258,711.97

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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.