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Finding the Fourth Proportional to 201,899.80, 302,521.65 and 168,438.70

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Solution

The fourth proportional to 201,899.80, 302,521.65 and 168,438.70 is: 252,384.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,899.80 : 302,521.65 = 168,438.70 : x
  2. Step 2: Convert to fraction form
    201,899.80/302,521.65 = 168,438.70/x
  3. Step 3: Cross multiply
    201,899.80x = 302,521.65 × 168,438.70
  4. Step 4: Simplify right side
    201,899.80x = 50,956,353,447.86
  5. Step 5: Solve for x
    x = 50,956,353,447.86/201,899.80
  6. Step 6: Final answer
    x = 252,384.37

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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.