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Finding the Fourth Proportional to 448,603.20, 619,086.24 and 257,654.88

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Solution

The fourth proportional to 448,603.20, 619,086.24 and 257,654.88 is: 355,571.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,603.20 : 619,086.24 = 257,654.88 : x
  2. Step 2: Convert to fraction form
    448,603.20/619,086.24 = 257,654.88/x
  3. Step 3: Cross multiply
    448,603.20x = 619,086.24 × 257,654.88
  4. Step 4: Simplify right side
    448,603.20x = 159,510,590,876.85
  5. Step 5: Solve for x
    x = 159,510,590,876.85/448,603.20
  6. Step 6: Final answer
    x = 355,571.67

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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.