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Finding the Fourth Proportional to 312,834, 431,708.36 and 169,590.36

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Solution

The fourth proportional to 312,834, 431,708.36 and 169,590.36 is: 234,033.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,834 : 431,708.36 = 169,590.36 : x
  2. Step 2: Convert to fraction form
    312,834/431,708.36 = 169,590.36/x
  3. Step 3: Cross multiply
    312,834x = 431,708.36 × 169,590.36
  4. Step 4: Simplify right side
    312,834x = 73,213,575,339.46
  5. Step 5: Solve for x
    x = 73,213,575,339.46/312,834
  6. Step 6: Final answer
    x = 234,033.31

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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.