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Finding the Fourth Proportional to 238,310.02, 328,866.49 and 129,413.31

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Solution

The fourth proportional to 238,310.02, 328,866.49 and 129,413.31 is: 178,589.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,310.02 : 328,866.49 = 129,413.31 : x
  2. Step 2: Convert to fraction form
    238,310.02/328,866.49 = 129,413.31/x
  3. Step 3: Cross multiply
    238,310.02x = 328,866.49 × 129,413.31
  4. Step 4: Simplify right side
    238,310.02x = 42,559,699,947.50
  5. Step 5: Solve for x
    x = 42,559,699,947.50/238,310.02
  6. Step 6: Final answer
    x = 178,589.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.