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Finding the Fourth Proportional to 245,616, 338,950.08 and 139,632

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Solution

The fourth proportional to 245,616, 338,950.08 and 139,632 is: 192,692.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,616 : 338,950.08 = 139,632 : x
  2. Step 2: Convert to fraction form
    245,616/338,950.08 = 139,632/x
  3. Step 3: Cross multiply
    245,616x = 338,950.08 × 139,632
  4. Step 4: Simplify right side
    245,616x = 47,328,277,570.56
  5. Step 5: Solve for x
    x = 47,328,277,570.56/245,616
  6. Step 6: Final answer
    x = 192,692.16

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