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Finding the Fourth Proportional to 350,127.20, 525,190.80 and 172,980.20

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Solution

The fourth proportional to 350,127.20, 525,190.80 and 172,980.20 is: 259,470.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,127.20 : 525,190.80 = 172,980.20 : x
  2. Step 2: Convert to fraction form
    350,127.20/525,190.80 = 172,980.20/x
  3. Step 3: Cross multiply
    350,127.20x = 525,190.80 × 172,980.20
  4. Step 4: Simplify right side
    350,127.20x = 90,847,609,622.16
  5. Step 5: Solve for x
    x = 90,847,609,622.16/350,127.20
  6. Step 6: Final answer
    x = 259,470.30

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1.5x scale

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.