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Finding the Fourth Proportional to 489,397.32, 675,399.33 and 274,551.30

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Solution

The fourth proportional to 489,397.32, 675,399.33 and 274,551.30 is: 378,898.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,397.32 : 675,399.33 = 274,551.30 : x
  2. Step 2: Convert to fraction form
    489,397.32/675,399.33 = 274,551.30/x
  3. Step 3: Cross multiply
    489,397.32x = 675,399.33 × 274,551.30
  4. Step 4: Simplify right side
    489,397.32x = 185,431,764,070.63
  5. Step 5: Solve for x
    x = 185,431,764,070.63/489,397.32
  6. Step 6: Final answer
    x = 378,898.20

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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.