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Finding the Fourth Proportional to 279,240.84, 385,179.56 and 243,516.60

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Solution

The fourth proportional to 279,240.84, 385,179.56 and 243,516.60 is: 335,902.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,240.84 : 385,179.56 = 243,516.60 : x
  2. Step 2: Convert to fraction form
    279,240.84/385,179.56 = 243,516.60/x
  3. Step 3: Cross multiply
    279,240.84x = 385,179.56 × 243,516.60
  4. Step 4: Simplify right side
    279,240.84x = 93,797,616,840.70
  5. Step 5: Solve for x
    x = 93,797,616,840.70/279,240.84
  6. Step 6: Final answer
    x = 335,902.22

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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.