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Finding the Fourth Proportional to 319,815, 441,383.58 and 185,679

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Solution

The fourth proportional to 319,815, 441,383.58 and 185,679 is: 256,259.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,815 : 441,383.58 = 185,679 : x
  2. Step 2: Convert to fraction form
    319,815/441,383.58 = 185,679/x
  3. Step 3: Cross multiply
    319,815x = 441,383.58 × 185,679
  4. Step 4: Simplify right side
    319,815x = 81,955,661,750.82
  5. Step 5: Solve for x
    x = 81,955,661,750.82/319,815
  6. Step 6: Final answer
    x = 256,259.59

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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.