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Finding the Fourth Proportional to 202,216.90, 303,325.35 and 139,231.30

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Solution

The fourth proportional to 202,216.90, 303,325.35 and 139,231.30 is: 208,846.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,216.90 : 303,325.35 = 139,231.30 : x
  2. Step 2: Convert to fraction form
    202,216.90/303,325.35 = 139,231.30/x
  3. Step 3: Cross multiply
    202,216.90x = 303,325.35 × 139,231.30
  4. Step 4: Simplify right side
    202,216.90x = 42,232,382,803.46
  5. Step 5: Solve for x
    x = 42,232,382,803.46/202,216.90
  6. Step 6: Final answer
    x = 208,846.95

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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.