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Finding the Fourth Proportional to 449,248.68, 673,969.71 and 129,398.34

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Solution

The fourth proportional to 449,248.68, 673,969.71 and 129,398.34 is: 194,125.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,248.68 : 673,969.71 = 129,398.34 : x
  2. Step 2: Convert to fraction form
    449,248.68/673,969.71 = 129,398.34/x
  3. Step 3: Cross multiply
    449,248.68x = 673,969.71 × 129,398.34
  4. Step 4: Simplify right side
    449,248.68x = 87,210,561,684.28
  5. Step 5: Solve for x
    x = 87,210,561,684.28/449,248.68
  6. Step 6: Final answer
    x = 194,125.36

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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.