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Finding the Fourth Proportional to 221,008.60, 330,735.30 and 202,346.20

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Solution

The fourth proportional to 221,008.60, 330,735.30 and 202,346.20 is: 302,807.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,008.60 : 330,735.30 = 202,346.20 : x
  2. Step 2: Convert to fraction form
    221,008.60/330,735.30 = 202,346.20/x
  3. Step 3: Cross multiply
    221,008.60x = 330,735.30 × 202,346.20
  4. Step 4: Simplify right side
    221,008.60x = 66,923,031,160.86
  5. Step 5: Solve for x
    x = 66,923,031,160.86/221,008.60
  6. Step 6: Final answer
    x = 302,807.36

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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.