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Finding the Fourth Proportional to 201,529.80, 302,950.80 and 142,772.40

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Solution

The fourth proportional to 201,529.80, 302,950.80 and 142,772.40 is: 214,623.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,529.80 : 302,950.80 = 142,772.40 : x
  2. Step 2: Convert to fraction form
    201,529.80/302,950.80 = 142,772.40/x
  3. Step 3: Cross multiply
    201,529.80x = 302,950.80 × 142,772.40
  4. Step 4: Simplify right side
    201,529.80x = 43,253,012,797.92
  5. Step 5: Solve for x
    x = 43,253,012,797.92/201,529.80
  6. Step 6: Final answer
    x = 214,623.41

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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.