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Finding the Fourth Proportional to 319,590.12, 479,369.60 and 119,894.94

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Solution

The fourth proportional to 319,590.12, 479,369.60 and 119,894.94 is: 179,836.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,590.12 : 479,369.60 = 119,894.94 : x
  2. Step 2: Convert to fraction form
    319,590.12/479,369.60 = 119,894.94/x
  3. Step 3: Cross multiply
    319,590.12x = 479,369.60 × 119,894.94
  4. Step 4: Simplify right side
    319,590.12x = 57,473,989,429.82
  5. Step 5: Solve for x
    x = 57,473,989,429.82/319,590.12
  6. Step 6: Final answer
    x = 179,836.57

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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.