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Finding the Fourth Proportional to 301,239.36, 451,862.28 and 90,879.12

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Solution

The fourth proportional to 301,239.36, 451,862.28 and 90,879.12 is: 136,319.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,239.36 : 451,862.28 = 90,879.12 : x
  2. Step 2: Convert to fraction form
    301,239.36/451,862.28 = 90,879.12/x
  3. Step 3: Cross multiply
    301,239.36x = 451,862.28 × 90,879.12
  4. Step 4: Simplify right side
    301,239.36x = 41,064,846,367.59
  5. Step 5: Solve for x
    x = 41,064,846,367.59/301,239.36
  6. Step 6: Final answer
    x = 136,319.66

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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.