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Finding the Fourth Proportional to 303,764.40, 455,209.20 and 135,146.70

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Solution

The fourth proportional to 303,764.40, 455,209.20 and 135,146.70 is: 202,525.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,764.40 : 455,209.20 = 135,146.70 : x
  2. Step 2: Convert to fraction form
    303,764.40/455,209.20 = 135,146.70/x
  3. Step 3: Cross multiply
    303,764.40x = 455,209.20 × 135,146.70
  4. Step 4: Simplify right side
    303,764.40x = 61,520,021,189.64
  5. Step 5: Solve for x
    x = 61,520,021,189.64/303,764.40
  6. Step 6: Final answer
    x = 202,525.45

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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.