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Finding the Fourth Proportional to 303,615.94, 455,422.95 and 81,999.94

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Solution

The fourth proportional to 303,615.94, 455,422.95 and 81,999.94 is: 122,999.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,615.94 : 455,422.95 = 81,999.94 : x
  2. Step 2: Convert to fraction form
    303,615.94/455,422.95 = 81,999.94/x
  3. Step 3: Cross multiply
    303,615.94x = 455,422.95 × 81,999.94
  4. Step 4: Simplify right side
    303,615.94x = 37,344,654,574.62
  5. Step 5: Solve for x
    x = 37,344,654,574.62/303,615.94
  6. Step 6: Final answer
    x = 122,999.65

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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.