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Finding the Fourth Proportional to 350,090.80, 525,136.20 and 172,682.80

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Solution

The fourth proportional to 350,090.80, 525,136.20 and 172,682.80 is: 259,024.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,090.80 : 525,136.20 = 172,682.80 : x
  2. Step 2: Convert to fraction form
    350,090.80/525,136.20 = 172,682.80/x
  3. Step 3: Cross multiply
    350,090.80x = 525,136.20 × 172,682.80
  4. Step 4: Simplify right side
    350,090.80x = 90,681,989,397.36
  5. Step 5: Solve for x
    x = 90,681,989,397.36/350,090.80
  6. Step 6: Final answer
    x = 259,024.20

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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.