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Finding the Fourth Proportional to 300,828.60, 451,242.90 and 292,080.60

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Solution

The fourth proportional to 300,828.60, 451,242.90 and 292,080.60 is: 438,120.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,828.60 : 451,242.90 = 292,080.60 : x
  2. Step 2: Convert to fraction form
    300,828.60/451,242.90 = 292,080.60/x
  3. Step 3: Cross multiply
    300,828.60x = 451,242.90 × 292,080.60
  4. Step 4: Simplify right side
    300,828.60x = 131,799,296,977.74
  5. Step 5: Solve for x
    x = 131,799,296,977.74/300,828.60
  6. Step 6: Final answer
    x = 438,120.90

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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.