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Finding the Fourth Proportional to 280,477.73, 389,672.19 and 277,114.71

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Solution

The fourth proportional to 280,477.73, 389,672.19 and 277,114.71 is: 384,999.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,477.73 : 389,672.19 = 277,114.71 : x
  2. Step 2: Convert to fraction form
    280,477.73/389,672.19 = 277,114.71/x
  3. Step 3: Cross multiply
    280,477.73x = 389,672.19 × 277,114.71
  4. Step 4: Simplify right side
    280,477.73x = 107,983,892,592.98
  5. Step 5: Solve for x
    x = 107,983,892,592.98/280,477.73
  6. Step 6: Final answer
    x = 384,999.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.