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Finding the Fourth Proportional to 300,002.80, 450,004.20 and 159,689.20

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Solution

The fourth proportional to 300,002.80, 450,004.20 and 159,689.20 is: 239,533.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,002.80 : 450,004.20 = 159,689.20 : x
  2. Step 2: Convert to fraction form
    300,002.80/450,004.20 = 159,689.20/x
  3. Step 3: Cross multiply
    300,002.80x = 450,004.20 × 159,689.20
  4. Step 4: Simplify right side
    300,002.80x = 71,860,810,694.64
  5. Step 5: Solve for x
    x = 71,860,810,694.64/300,002.80
  6. Step 6: Final answer
    x = 239,533.80

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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.