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Finding the Fourth Proportional to 303,621.07, 455,430.64 and 82,005.07

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Solution

The fourth proportional to 303,621.07, 455,430.64 and 82,005.07 is: 123,007.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,621.07 : 455,430.64 = 82,005.07 : x
  2. Step 2: Convert to fraction form
    303,621.07/455,430.64 = 82,005.07/x
  3. Step 3: Cross multiply
    303,621.07x = 455,430.64 × 82,005.07
  4. Step 4: Simplify right side
    303,621.07x = 37,347,621,513.34
  5. Step 5: Solve for x
    x = 37,347,621,513.34/303,621.07
  6. Step 6: Final answer
    x = 123,007.34

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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.