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Finding the Fourth Proportional to 201,643.70, 302,465.55 and 198,533.30

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Solution

The fourth proportional to 201,643.70, 302,465.55 and 198,533.30 is: 297,799.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,643.70 : 302,465.55 = 198,533.30 : x
  2. Step 2: Convert to fraction form
    201,643.70/302,465.55 = 198,533.30/x
  3. Step 3: Cross multiply
    201,643.70x = 302,465.55 × 198,533.30
  4. Step 4: Simplify right side
    201,643.70x = 60,049,483,777.82
  5. Step 5: Solve for x
    x = 60,049,483,777.82/201,643.70
  6. Step 6: Final answer
    x = 297,799.95

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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.