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Finding the Fourth Proportional to 319,509.84, 441,070.34 and 275,728.23

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Solution

The fourth proportional to 319,509.84, 441,070.34 and 275,728.23 is: 380,631.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,509.84 : 441,070.34 = 275,728.23 : x
  2. Step 2: Convert to fraction form
    319,509.84/441,070.34 = 275,728.23/x
  3. Step 3: Cross multiply
    319,509.84x = 441,070.34 × 275,728.23
  4. Step 4: Simplify right side
    319,509.84x = 121,615,544,054.88
  5. Step 5: Solve for x
    x = 121,615,544,054.88/319,509.84
  6. Step 6: Final answer
    x = 380,631.61

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