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Finding the Fourth Proportional to 455,073, 628,001.01 and 253,869

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Solution

The fourth proportional to 455,073, 628,001.01 and 253,869 is: 350,339.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,073 : 628,001.01 = 253,869 : x
  2. Step 2: Convert to fraction form
    455,073/628,001.01 = 253,869/x
  3. Step 3: Cross multiply
    455,073x = 628,001.01 × 253,869
  4. Step 4: Simplify right side
    455,073x = 159,429,988,407.69
  5. Step 5: Solve for x
    x = 159,429,988,407.69/455,073
  6. Step 6: Final answer
    x = 350,339.37

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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.