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Finding the Fourth Proportional to 305,063.64, 420,986.62 and 170,927.32

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Solution

The fourth proportional to 305,063.64, 420,986.62 and 170,927.32 is: 235,879.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,063.64 : 420,986.62 = 170,927.32 : x
  2. Step 2: Convert to fraction form
    305,063.64/420,986.62 = 170,927.32/x
  3. Step 3: Cross multiply
    305,063.64x = 420,986.62 × 170,927.32
  4. Step 4: Simplify right side
    305,063.64x = 71,958,114,712.46
  5. Step 5: Solve for x
    x = 71,958,114,712.46/305,063.64
  6. Step 6: Final answer
    x = 235,879.03

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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.