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Finding the Fourth Proportional to 303,638.80, 455,166.60 and 236,133.40

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Solution

The fourth proportional to 303,638.80, 455,166.60 and 236,133.40 is: 353,973.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,638.80 : 455,166.60 = 236,133.40 : x
  2. Step 2: Convert to fraction form
    303,638.80/455,166.60 = 236,133.40/x
  3. Step 3: Cross multiply
    303,638.80x = 455,166.60 × 236,133.40
  4. Step 4: Simplify right side
    303,638.80x = 107,480,036,824.44
  5. Step 5: Solve for x
    x = 107,480,036,824.44/303,638.80
  6. Step 6: Final answer
    x = 353,973.33

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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.