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Finding the Fourth Proportional to 280,490.92, 420,889.46 and 162,392.92

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Solution

The fourth proportional to 280,490.92, 420,889.46 and 162,392.92 is: 243,678.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,490.92 : 420,889.46 = 162,392.92 : x
  2. Step 2: Convert to fraction form
    280,490.92/420,889.46 = 162,392.92/x
  3. Step 3: Cross multiply
    280,490.92x = 420,889.46 × 162,392.92
  4. Step 4: Simplify right side
    280,490.92x = 68,349,468,406.62
  5. Step 5: Solve for x
    x = 68,349,468,406.62/280,490.92
  6. Step 6: Final answer
    x = 243,678.01

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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.