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Finding the Fourth Proportional to 455,189.71, 628,161.79 and 253,985.71

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Solution

The fourth proportional to 455,189.71, 628,161.79 and 253,985.71 is: 350,500.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,189.71 : 628,161.79 = 253,985.71 : x
  2. Step 2: Convert to fraction form
    455,189.71/628,161.79 = 253,985.71/x
  3. Step 3: Cross multiply
    455,189.71x = 628,161.79 × 253,985.71
  4. Step 4: Simplify right side
    455,189.71x = 159,544,115,087.21
  5. Step 5: Solve for x
    x = 159,544,115,087.21/455,189.71
  6. Step 6: Final answer
    x = 350,500.27

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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.