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Finding the Fourth Proportional to 319,603.78, 479,281.06 and 119,815.26

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Solution

The fourth proportional to 319,603.78, 479,281.06 and 119,815.26 is: 179,676.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,603.78 : 479,281.06 = 119,815.26 : x
  2. Step 2: Convert to fraction form
    319,603.78/479,281.06 = 119,815.26/x
  3. Step 3: Cross multiply
    319,603.78x = 479,281.06 × 119,815.26
  4. Step 4: Simplify right side
    319,603.78x = 57,425,184,816.98
  5. Step 5: Solve for x
    x = 57,425,184,816.98/319,603.78
  6. Step 6: Final answer
    x = 179,676.18

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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.