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Finding the Fourth Proportional to 489,379.43, 675,342.51 and 271,621.46

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Solution

The fourth proportional to 489,379.43, 675,342.51 and 271,621.46 is: 374,837.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,379.43 : 675,342.51 = 271,621.46 : x
  2. Step 2: Convert to fraction form
    489,379.43/675,342.51 = 271,621.46/x
  3. Step 3: Cross multiply
    489,379.43x = 675,342.51 × 271,621.46
  4. Step 4: Simplify right side
    489,379.43x = 183,437,518,566.27
  5. Step 5: Solve for x
    x = 183,437,518,566.27/489,379.43
  6. Step 6: Final answer
    x = 374,837.00

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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.