Home / 328,971.63-493,243.61-129,311.55

Finding the Fourth Proportional to 328,971.63, 493,243.61 and 129,311.55

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Solution

The fourth proportional to 328,971.63, 493,243.61 and 129,311.55 is: 193,883.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,971.63 : 493,243.61 = 129,311.55 : x
  2. Step 2: Convert to fraction form
    328,971.63/493,243.61 = 129,311.55/x
  3. Step 3: Cross multiply
    328,971.63x = 493,243.61 × 129,311.55
  4. Step 4: Simplify right side
    328,971.63x = 63,782,095,090.14
  5. Step 5: Solve for x
    x = 63,782,095,090.14/328,971.63
  6. Step 6: Final answer
    x = 193,883.27

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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.