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Finding the Fourth Proportional to 312,577.98, 431,357.97 and 169,336.77

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Solution

The fourth proportional to 312,577.98, 431,357.97 and 169,336.77 is: 233,684.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,577.98 : 431,357.97 = 169,336.77 : x
  2. Step 2: Convert to fraction form
    312,577.98/431,357.97 = 169,336.77/x
  3. Step 3: Cross multiply
    312,577.98x = 431,357.97 × 169,336.77
  4. Step 4: Simplify right side
    312,577.98x = 73,044,765,353.56
  5. Step 5: Solve for x
    x = 73,044,765,353.56/312,577.98
  6. Step 6: Final answer
    x = 233,684.94

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1.5x scale

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.