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Finding the Fourth Proportional to 446,825.20, 670,237.80 and 257,090.80

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Solution

The fourth proportional to 446,825.20, 670,237.80 and 257,090.80 is: 385,636.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,825.20 : 670,237.80 = 257,090.80 : x
  2. Step 2: Convert to fraction form
    446,825.20/670,237.80 = 257,090.80/x
  3. Step 3: Cross multiply
    446,825.20x = 670,237.80 × 257,090.80
  4. Step 4: Simplify right side
    446,825.20x = 172,311,972,192.24
  5. Step 5: Solve for x
    x = 172,311,972,192.24/446,825.20
  6. Step 6: Final answer
    x = 385,636.20

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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.