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Finding the Fourth Proportional to 172,185.40, 258,292.92 and 47,526.40

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Solution

The fourth proportional to 172,185.40, 258,292.92 and 47,526.40 is: 71,293.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,185.40 : 258,292.92 = 47,526.40 : x
  2. Step 2: Convert to fraction form
    172,185.40/258,292.92 = 47,526.40/x
  3. Step 3: Cross multiply
    172,185.40x = 258,292.92 × 47,526.40
  4. Step 4: Simplify right side
    172,185.40x = 12,275,732,633.09
  5. Step 5: Solve for x
    x = 12,275,732,633.09/172,185.40
  6. Step 6: Final answer
    x = 71,293.69

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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.