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Finding the Fourth Proportional to 300,008.80, 450,128.40 and 295,285.60

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Solution

The fourth proportional to 300,008.80, 450,128.40 and 295,285.60 is: 443,041.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,008.80 : 450,128.40 = 295,285.60 : x
  2. Step 2: Convert to fraction form
    300,008.80/450,128.40 = 295,285.60/x
  3. Step 3: Cross multiply
    300,008.80x = 450,128.40 × 295,285.60
  4. Step 4: Simplify right side
    300,008.80x = 132,916,434,671.04
  5. Step 5: Solve for x
    x = 132,916,434,671.04/300,008.80
  6. Step 6: Final answer
    x = 443,041.79

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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.