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Finding the Fourth Proportional to 328,540.60, 493,005.30 and 239,570.20

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Solution

The fourth proportional to 328,540.60, 493,005.30 and 239,570.20 is: 359,497.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,540.60 : 493,005.30 = 239,570.20 : x
  2. Step 2: Convert to fraction form
    328,540.60/493,005.30 = 239,570.20/x
  3. Step 3: Cross multiply
    328,540.60x = 493,005.30 × 239,570.20
  4. Step 4: Simplify right side
    328,540.60x = 118,109,378,322.06
  5. Step 5: Solve for x
    x = 118,109,378,322.06/328,540.60
  6. Step 6: Final answer
    x = 359,497.06

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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.