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Finding the Fourth Proportional to 248,435.40, 372,215.70 and 203,820.60

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Solution

The fourth proportional to 248,435.40, 372,215.70 and 203,820.60 is: 305,372.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,435.40 : 372,215.70 = 203,820.60 : x
  2. Step 2: Convert to fraction form
    248,435.40/372,215.70 = 203,820.60/x
  3. Step 3: Cross multiply
    248,435.40x = 372,215.70 × 203,820.60
  4. Step 4: Simplify right side
    248,435.40x = 75,865,227,303.42
  5. Step 5: Solve for x
    x = 75,865,227,303.42/248,435.40
  6. Step 6: Final answer
    x = 305,372.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.