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Finding the Fourth Proportional to 449,145, 619,820.64 and 247,941

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Solution

The fourth proportional to 449,145, 619,820.64 and 247,941 is: 342,158.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,145 : 619,820.64 = 247,941 : x
  2. Step 2: Convert to fraction form
    449,145/619,820.64 = 247,941/x
  3. Step 3: Cross multiply
    449,145x = 619,820.64 × 247,941
  4. Step 4: Simplify right side
    449,145x = 153,678,949,302.24
  5. Step 5: Solve for x
    x = 153,678,949,302.24/449,145
  6. Step 6: Final answer
    x = 342,158.88

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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.