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Finding the Fourth Proportional to 366,481.20, 549,721.80 and 130,090.80

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Solution

The fourth proportional to 366,481.20, 549,721.80 and 130,090.80 is: 195,136.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,481.20 : 549,721.80 = 130,090.80 : x
  2. Step 2: Convert to fraction form
    366,481.20/549,721.80 = 130,090.80/x
  3. Step 3: Cross multiply
    366,481.20x = 549,721.80 × 130,090.80
  4. Step 4: Simplify right side
    366,481.20x = 71,513,748,739.44
  5. Step 5: Solve for x
    x = 71,513,748,739.44/366,481.20
  6. Step 6: Final answer
    x = 195,136.20

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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.