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Finding the Fourth Proportional to 279,392.08, 385,503.96 and 269,790.88

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Solution

The fourth proportional to 279,392.08, 385,503.96 and 269,790.88 is: 372,256.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,392.08 : 385,503.96 = 269,790.88 : x
  2. Step 2: Convert to fraction form
    279,392.08/385,503.96 = 269,790.88/x
  3. Step 3: Cross multiply
    279,392.08x = 385,503.96 × 269,790.88
  4. Step 4: Simplify right side
    279,392.08x = 104,005,452,611.89
  5. Step 5: Solve for x
    x = 104,005,452,611.89/279,392.08
  6. Step 6: Final answer
    x = 372,256.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.