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Finding the Fourth Proportional to 319,886.07, 479,668.15 and 106,578.42

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Solution

The fourth proportional to 319,886.07, 479,668.15 and 106,578.42 is: 159,814.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,886.07 : 479,668.15 = 106,578.42 : x
  2. Step 2: Convert to fraction form
    319,886.07/479,668.15 = 106,578.42/x
  3. Step 3: Cross multiply
    319,886.07x = 479,668.15 × 106,578.42
  4. Step 4: Simplify right side
    319,886.07x = 51,122,273,551.32
  5. Step 5: Solve for x
    x = 51,122,273,551.32/319,886.07
  6. Step 6: Final answer
    x = 159,814.00

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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.