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Finding the Fourth Proportional to 350,429.80, 525,644.70 and 200,612.20

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Solution

The fourth proportional to 350,429.80, 525,644.70 and 200,612.20 is: 300,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,429.80 : 525,644.70 = 200,612.20 : x
  2. Step 2: Convert to fraction form
    350,429.80/525,644.70 = 200,612.20/x
  3. Step 3: Cross multiply
    350,429.80x = 525,644.70 × 200,612.20
  4. Step 4: Simplify right side
    350,429.80x = 105,450,739,685.34
  5. Step 5: Solve for x
    x = 105,450,739,685.34/350,429.80
  6. Step 6: Final answer
    x = 300,918.30

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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.