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Finding the Fourth Proportional to 478,127.85, 659,668.35 and 271,362.99

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Solution

The fourth proportional to 478,127.85, 659,668.35 and 271,362.99 is: 374,396.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,127.85 : 659,668.35 = 271,362.99 : x
  2. Step 2: Convert to fraction form
    478,127.85/659,668.35 = 271,362.99/x
  3. Step 3: Cross multiply
    478,127.85x = 659,668.35 × 271,362.99
  4. Step 4: Simplify right side
    478,127.85x = 179,009,579,355.73
  5. Step 5: Solve for x
    x = 179,009,579,355.73/478,127.85
  6. Step 6: Final answer
    x = 374,396.89

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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.