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Finding the Fourth Proportional to 489,678.01, 675,795.99 and 271,900.20

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Solution

The fourth proportional to 489,678.01, 675,795.99 and 271,900.20 is: 375,244.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,678.01 : 675,795.99 = 271,900.20 : x
  2. Step 2: Convert to fraction form
    489,678.01/675,795.99 = 271,900.20/x
  3. Step 3: Cross multiply
    489,678.01x = 675,795.99 × 271,900.20
  4. Step 4: Simplify right side
    489,678.01x = 183,749,062,773.72
  5. Step 5: Solve for x
    x = 183,749,062,773.72/489,678.01
  6. Step 6: Final answer
    x = 375,244.67

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1.5x scale

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.