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Finding the Fourth Proportional to 443,809.36, 665,648.43 and 163,261

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Solution

The fourth proportional to 443,809.36, 665,648.43 and 163,261 is: 244,867.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,809.36 : 665,648.43 = 163,261 : x
  2. Step 2: Convert to fraction form
    443,809.36/665,648.43 = 163,261/x
  3. Step 3: Cross multiply
    443,809.36x = 665,648.43 × 163,261
  4. Step 4: Simplify right side
    443,809.36x = 108,674,428,330.23
  5. Step 5: Solve for x
    x = 108,674,428,330.23/443,809.36
  6. Step 6: Final answer
    x = 244,867.36

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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.