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Finding the Fourth Proportional to 355,840.40, 491,047.54 and 202,927.81

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Solution

The fourth proportional to 355,840.40, 491,047.54 and 202,927.81 is: 280,033.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,840.40 : 491,047.54 = 202,927.81 : x
  2. Step 2: Convert to fraction form
    355,840.40/491,047.54 = 202,927.81/x
  3. Step 3: Cross multiply
    355,840.40x = 491,047.54 × 202,927.81
  4. Step 4: Simplify right side
    355,840.40x = 99,647,198,428.21
  5. Step 5: Solve for x
    x = 99,647,198,428.21/355,840.40
  6. Step 6: Final answer
    x = 280,033.40

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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.