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Finding the Fourth Proportional to 275,578.93, 380,269.47 and 154,733.50

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Solution

The fourth proportional to 275,578.93, 380,269.47 and 154,733.50 is: 213,515.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,578.93 : 380,269.47 = 154,733.50 : x
  2. Step 2: Convert to fraction form
    275,578.93/380,269.47 = 154,733.50/x
  3. Step 3: Cross multiply
    275,578.93x = 380,269.47 × 154,733.50
  4. Step 4: Simplify right side
    275,578.93x = 58,840,426,036.25
  5. Step 5: Solve for x
    x = 58,840,426,036.25/275,578.93
  6. Step 6: Final answer
    x = 213,515.69

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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.