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Finding the Fourth Proportional to 644,381.04, 966,201.18 and 265,563.30

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Solution

The fourth proportional to 644,381.04, 966,201.18 and 265,563.30 is: 398,192.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,381.04 : 966,201.18 = 265,563.30 : x
  2. Step 2: Convert to fraction form
    644,381.04/966,201.18 = 265,563.30/x
  3. Step 3: Cross multiply
    644,381.04x = 966,201.18 × 265,563.30
  4. Step 4: Simplify right side
    644,381.04x = 256,587,573,824.69
  5. Step 5: Solve for x
    x = 256,587,573,824.69/644,381.04
  6. Step 6: Final answer
    x = 398,192.31

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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.