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Finding the Fourth Proportional to 303,779.90, 455,232.45 and 135,162.20

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Solution

The fourth proportional to 303,779.90, 455,232.45 and 135,162.20 is: 202,548.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,779.90 : 455,232.45 = 135,162.20 : x
  2. Step 2: Convert to fraction form
    303,779.90/455,232.45 = 135,162.20/x
  3. Step 3: Cross multiply
    303,779.90x = 455,232.45 × 135,162.20
  4. Step 4: Simplify right side
    303,779.90x = 61,530,219,453.39
  5. Step 5: Solve for x
    x = 61,530,219,453.39/303,779.90
  6. Step 6: Final answer
    x = 202,548.69

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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.