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Finding the Fourth Proportional to 303,485.30, 455,410.20 and 125,973.80

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Solution

The fourth proportional to 303,485.30, 455,410.20 and 125,973.80 is: 189,036.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,485.30 : 455,410.20 = 125,973.80 : x
  2. Step 2: Convert to fraction form
    303,485.30/455,410.20 = 125,973.80/x
  3. Step 3: Cross multiply
    303,485.30x = 455,410.20 × 125,973.80
  4. Step 4: Simplify right side
    303,485.30x = 57,369,753,452.76
  5. Step 5: Solve for x
    x = 57,369,753,452.76/303,485.30
  6. Step 6: Final answer
    x = 189,036.35

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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.