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Finding the Fourth Proportional to 279,276.66, 385,409.91 and 151,960.44

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Solution

The fourth proportional to 279,276.66, 385,409.91 and 151,960.44 is: 209,709.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,276.66 : 385,409.91 = 151,960.44 : x
  2. Step 2: Convert to fraction form
    279,276.66/385,409.91 = 151,960.44/x
  3. Step 3: Cross multiply
    279,276.66x = 385,409.91 × 151,960.44
  4. Step 4: Simplify right side
    279,276.66x = 58,567,059,503.96
  5. Step 5: Solve for x
    x = 58,567,059,503.96/279,276.66
  6. Step 6: Final answer
    x = 209,709.83

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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.