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Finding the Fourth Proportional to 450,636.48, 621,872.64 and 271,788.48

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Solution

The fourth proportional to 450,636.48, 621,872.64 and 271,788.48 is: 375,064.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,636.48 : 621,872.64 = 271,788.48 : x
  2. Step 2: Convert to fraction form
    450,636.48/621,872.64 = 271,788.48/x
  3. Step 3: Cross multiply
    450,636.48x = 621,872.64 × 271,788.48
  4. Step 4: Simplify right side
    450,636.48x = 169,017,819,579.19
  5. Step 5: Solve for x
    x = 169,017,819,579.19/450,636.48
  6. Step 6: Final answer
    x = 375,064.66

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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.