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Finding the Fourth Proportional to 489,262.48, 675,210.13 and 274,385.48

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Solution

The fourth proportional to 489,262.48, 675,210.13 and 274,385.48 is: 378,667.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,262.48 : 675,210.13 = 274,385.48 : x
  2. Step 2: Convert to fraction form
    489,262.48/675,210.13 = 274,385.48/x
  3. Step 3: Cross multiply
    489,262.48x = 675,210.13 × 274,385.48
  4. Step 4: Simplify right side
    489,262.48x = 185,267,851,558.90
  5. Step 5: Solve for x
    x = 185,267,851,558.90/489,262.48
  6. Step 6: Final answer
    x = 378,667.61

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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.