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Finding the Fourth Proportional to 466,774.70, 643,889.73 and 305,889.26

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Solution

The fourth proportional to 466,774.70, 643,889.73 and 305,889.26 is: 421,957.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    466,774.70 : 643,889.73 = 305,889.26 : x
  2. Step 2: Convert to fraction form
    466,774.70/643,889.73 = 305,889.26/x
  3. Step 3: Cross multiply
    466,774.70x = 643,889.73 × 305,889.26
  4. Step 4: Simplify right side
    466,774.70x = 196,958,953,031.30
  5. Step 5: Solve for x
    x = 196,958,953,031.30/466,774.70
  6. Step 6: Final answer
    x = 421,957.22

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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.