Home / 329,731.08-494,902.80-130,189.20

Finding the Fourth Proportional to 329,731.08, 494,902.80 and 130,189.20

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Solution

The fourth proportional to 329,731.08, 494,902.80 and 130,189.20 is: 195,404.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,731.08 : 494,902.80 = 130,189.20 : x
  2. Step 2: Convert to fraction form
    329,731.08/494,902.80 = 130,189.20/x
  3. Step 3: Cross multiply
    329,731.08x = 494,902.80 × 130,189.20
  4. Step 4: Simplify right side
    329,731.08x = 64,430,999,609.76
  5. Step 5: Solve for x
    x = 64,430,999,609.76/329,731.08
  6. Step 6: Final answer
    x = 195,404.69

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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.