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Finding the Fourth Proportional to 429,783.73, 644,697.01 and 163,564.88

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Solution

The fourth proportional to 429,783.73, 644,697.01 and 163,564.88 is: 245,355.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,783.73 : 644,697.01 = 163,564.88 : x
  2. Step 2: Convert to fraction form
    429,783.73/644,697.01 = 163,564.88/x
  3. Step 3: Cross multiply
    429,783.73x = 644,697.01 × 163,564.88
  4. Step 4: Simplify right side
    429,783.73x = 105,449,786,057.98
  5. Step 5: Solve for x
    x = 105,449,786,057.98/429,783.73
  6. Step 6: Final answer
    x = 245,355.46

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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.