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Finding the Fourth Proportional to 216,853.77, 299,394.05 and 139,360.85

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Solution

The fourth proportional to 216,853.77, 299,394.05 and 139,360.85 is: 192,405.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,853.77 : 299,394.05 = 139,360.85 : x
  2. Step 2: Convert to fraction form
    216,853.77/299,394.05 = 139,360.85/x
  3. Step 3: Cross multiply
    216,853.77x = 299,394.05 × 139,360.85
  4. Step 4: Simplify right side
    216,853.77x = 41,723,809,292.94
  5. Step 5: Solve for x
    x = 41,723,809,292.94/216,853.77
  6. Step 6: Final answer
    x = 192,405.28

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1.5x scale

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.