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Finding the Fourth Proportional to 319,361, 479,039.58 and 82,703.08

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Solution

The fourth proportional to 319,361, 479,039.58 and 82,703.08 is: 124,054.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,361 : 479,039.58 = 82,703.08 : x
  2. Step 2: Convert to fraction form
    319,361/479,039.58 = 82,703.08/x
  3. Step 3: Cross multiply
    319,361x = 479,039.58 × 82,703.08
  4. Step 4: Simplify right side
    319,361x = 39,618,048,707.91
  5. Step 5: Solve for x
    x = 39,618,048,707.91/319,361
  6. Step 6: Final answer
    x = 124,054.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.