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Finding the Fourth Proportional to 315,967.41, 436,041.90 and 172,727.37

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Solution

The fourth proportional to 315,967.41, 436,041.90 and 172,727.37 is: 238,367.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,967.41 : 436,041.90 = 172,727.37 : x
  2. Step 2: Convert to fraction form
    315,967.41/436,041.90 = 172,727.37/x
  3. Step 3: Cross multiply
    315,967.41x = 436,041.90 × 172,727.37
  4. Step 4: Simplify right side
    315,967.41x = 75,316,370,596.80
  5. Step 5: Solve for x
    x = 75,316,370,596.80/315,967.41
  6. Step 6: Final answer
    x = 238,367.53

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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.