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Finding the Fourth Proportional to 449,178.32, 619,856.43 and 245,219.31

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Solution

The fourth proportional to 449,178.32, 619,856.43 and 245,219.31 is: 338,397.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,178.32 : 619,856.43 = 245,219.31 : x
  2. Step 2: Convert to fraction form
    449,178.32/619,856.43 = 245,219.31/x
  3. Step 3: Cross multiply
    449,178.32x = 619,856.43 × 245,219.31
  4. Step 4: Simplify right side
    449,178.32x = 152,000,765,144.09
  5. Step 5: Solve for x
    x = 152,000,765,144.09/449,178.32
  6. Step 6: Final answer
    x = 338,397.37

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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.