Home / 455,189.20-628,161.10-253,985.20

Finding the Fourth Proportional to 455,189.20, 628,161.10 and 253,985.20

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Solution

The fourth proportional to 455,189.20, 628,161.10 and 253,985.20 is: 350,499.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,189.20 : 628,161.10 = 253,985.20 : x
  2. Step 2: Convert to fraction form
    455,189.20/628,161.10 = 253,985.20/x
  3. Step 3: Cross multiply
    455,189.20x = 628,161.10 × 253,985.20
  4. Step 4: Simplify right side
    455,189.20x = 159,543,624,658.09
  5. Step 5: Solve for x
    x = 159,543,624,658.09/455,189.20
  6. Step 6: Final answer
    x = 350,499.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.