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Finding the Fourth Proportional to 279,260.01, 385,388.42 and 151,940.43

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Solution

The fourth proportional to 279,260.01, 385,388.42 and 151,940.43 is: 209,683.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,260.01 : 385,388.42 = 151,940.43 : x
  2. Step 2: Convert to fraction form
    279,260.01/385,388.42 = 151,940.43/x
  3. Step 3: Cross multiply
    279,260.01x = 385,388.42 × 151,940.43
  4. Step 4: Simplify right side
    279,260.01x = 58,556,081,492.12
  5. Step 5: Solve for x
    x = 58,556,081,492.12/279,260.01
  6. Step 6: Final answer
    x = 209,683.02

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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.