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Finding the Fourth Proportional to 315,754.37, 435,747.30 and 172,523.30

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Solution

The fourth proportional to 315,754.37, 435,747.30 and 172,523.30 is: 238,085.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,754.37 : 435,747.30 = 172,523.30 : x
  2. Step 2: Convert to fraction form
    315,754.37/435,747.30 = 172,523.30/x
  3. Step 3: Cross multiply
    315,754.37x = 435,747.30 × 172,523.30
  4. Step 4: Simplify right side
    315,754.37x = 75,176,562,162.09
  5. Step 5: Solve for x
    x = 75,176,562,162.09/315,754.37
  6. Step 6: Final answer
    x = 238,085.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.