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Finding the Fourth Proportional to 489,312.81, 675,288.54 and 271,562.58

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Solution

The fourth proportional to 489,312.81, 675,288.54 and 271,562.58 is: 374,776.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,312.81 : 675,288.54 = 271,562.58 : x
  2. Step 2: Convert to fraction form
    489,312.81/675,288.54 = 271,562.58/x
  3. Step 3: Cross multiply
    489,312.81x = 675,288.54 × 271,562.58
  4. Step 4: Simplify right side
    489,312.81x = 183,383,098,166.83
  5. Step 5: Solve for x
    x = 183,383,098,166.83/489,312.81
  6. Step 6: Final answer
    x = 374,776.82

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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.