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Finding the Fourth Proportional to 301,279.99, 451,918.02 and 76,638.51

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Solution

The fourth proportional to 301,279.99, 451,918.02 and 76,638.51 is: 114,957.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,279.99 : 451,918.02 = 76,638.51 : x
  2. Step 2: Convert to fraction form
    301,279.99/451,918.02 = 76,638.51/x
  3. Step 3: Cross multiply
    301,279.99x = 451,918.02 × 76,638.51
  4. Step 4: Simplify right side
    301,279.99x = 34,634,323,694.95
  5. Step 5: Solve for x
    x = 34,634,323,694.95/301,279.99
  6. Step 6: Final answer
    x = 114,957.27

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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.