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Finding the Fourth Proportional to 319,605.72, 479,283.98 and 119,817.10

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Solution

The fourth proportional to 319,605.72, 479,283.98 and 119,817.10 is: 179,678.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,605.72 : 479,283.98 = 119,817.10 : x
  2. Step 2: Convert to fraction form
    319,605.72/479,283.98 = 119,817.10/x
  3. Step 3: Cross multiply
    319,605.72x = 479,283.98 × 119,817.10
  4. Step 4: Simplify right side
    319,605.72x = 57,426,415,661.39
  5. Step 5: Solve for x
    x = 57,426,415,661.39/319,605.72
  6. Step 6: Final answer
    x = 179,678.94

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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.