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Finding the Fourth Proportional to 280,960.02, 420,929.64 and 162,380.88

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Solution

The fourth proportional to 280,960.02, 420,929.64 and 162,380.88 is: 243,276.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,960.02 : 420,929.64 = 162,380.88 : x
  2. Step 2: Convert to fraction form
    280,960.02/420,929.64 = 162,380.88/x
  3. Step 3: Cross multiply
    280,960.02x = 420,929.64 × 162,380.88
  4. Step 4: Simplify right side
    280,960.02x = 68,350,925,361.28
  5. Step 5: Solve for x
    x = 68,350,925,361.28/280,960.02
  6. Step 6: Final answer
    x = 243,276.34

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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.