Home / 278,418.15-383,623.54-187,616.41

Finding the Fourth Proportional to 278,418.15, 383,623.54 and 187,616.41

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Solution

The fourth proportional to 278,418.15, 383,623.54 and 187,616.41 is: 258,510.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,418.15 : 383,623.54 = 187,616.41 : x
  2. Step 2: Convert to fraction form
    278,418.15/383,623.54 = 187,616.41/x
  3. Step 3: Cross multiply
    278,418.15x = 383,623.54 × 187,616.41
  4. Step 4: Simplify right side
    278,418.15x = 71,974,069,938.19
  5. Step 5: Solve for x
    x = 71,974,069,938.19/278,418.15
  6. Step 6: Final answer
    x = 258,510.70

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1.5x scale

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.