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Finding the Fourth Proportional to 489,901.30, 676,011.54 and 275,065

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Solution

The fourth proportional to 489,901.30, 676,011.54 and 275,065 is: 379,560.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,901.30 : 676,011.54 = 275,065 : x
  2. Step 2: Convert to fraction form
    489,901.30/676,011.54 = 275,065/x
  3. Step 3: Cross multiply
    489,901.30x = 676,011.54 × 275,065
  4. Step 4: Simplify right side
    489,901.30x = 185,947,114,250.10
  5. Step 5: Solve for x
    x = 185,947,114,250.10/489,901.30
  6. Step 6: Final answer
    x = 379,560.36

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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.