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Finding the Fourth Proportional to 270,143.44, 372,812.30 and 155,439.52

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Solution

The fourth proportional to 270,143.44, 372,812.30 and 155,439.52 is: 214,514.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,143.44 : 372,812.30 = 155,439.52 : x
  2. Step 2: Convert to fraction form
    270,143.44/372,812.30 = 155,439.52/x
  3. Step 3: Cross multiply
    270,143.44x = 372,812.30 × 155,439.52
  4. Step 4: Simplify right side
    270,143.44x = 57,949,764,962.10
  5. Step 5: Solve for x
    x = 57,949,764,962.10/270,143.44
  6. Step 6: Final answer
    x = 214,514.80

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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.