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Finding the Fourth Proportional to 280,827.90, 393,858.90 and 280,827.90

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Solution

The fourth proportional to 280,827.90, 393,858.90 and 280,827.90 is: 393,858.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,827.90 : 393,858.90 = 280,827.90 : x
  2. Step 2: Convert to fraction form
    280,827.90/393,858.90 = 280,827.90/x
  3. Step 3: Cross multiply
    280,827.90x = 393,858.90 × 280,827.90
  4. Step 4: Simplify right side
    280,827.90x = 110,606,567,783.31
  5. Step 5: Solve for x
    x = 110,606,567,783.31/280,827.90
  6. Step 6: Final answer
    x = 393,858.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.