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Finding the Fourth Proportional to 303,245.40, 455,127.30 and 135,024.60

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Solution

The fourth proportional to 303,245.40, 455,127.30 and 135,024.60 is: 202,652.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,245.40 : 455,127.30 = 135,024.60 : x
  2. Step 2: Convert to fraction form
    303,245.40/455,127.30 = 135,024.60/x
  3. Step 3: Cross multiply
    303,245.40x = 455,127.30 × 135,024.60
  4. Step 4: Simplify right side
    303,245.40x = 61,453,381,631.58
  5. Step 5: Solve for x
    x = 61,453,381,631.58/303,245.40
  6. Step 6: Final answer
    x = 202,652.31

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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.