Home / 281,118.45-387,947.03-153,796.17

Finding the Fourth Proportional to 281,118.45, 387,947.03 and 153,796.17

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Solution

The fourth proportional to 281,118.45, 387,947.03 and 153,796.17 is: 212,240.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,118.45 : 387,947.03 = 153,796.17 : x
  2. Step 2: Convert to fraction form
    281,118.45/387,947.03 = 153,796.17/x
  3. Step 3: Cross multiply
    281,118.45x = 387,947.03 × 153,796.17
  4. Step 4: Simplify right side
    281,118.45x = 59,664,766,607.89
  5. Step 5: Solve for x
    x = 59,664,766,607.89/281,118.45
  6. Step 6: Final answer
    x = 212,240.66

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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.