Home / 345,905.40-518,469.30-177,360.60

Finding the Fourth Proportional to 345,905.40, 518,469.30 and 177,360.60

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Solution

The fourth proportional to 345,905.40, 518,469.30 and 177,360.60 is: 265,841.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,905.40 : 518,469.30 = 177,360.60 : x
  2. Step 2: Convert to fraction form
    345,905.40/518,469.30 = 177,360.60/x
  3. Step 3: Cross multiply
    345,905.40x = 518,469.30 × 177,360.60
  4. Step 4: Simplify right side
    345,905.40x = 91,956,026,129.58
  5. Step 5: Solve for x
    x = 91,956,026,129.58/345,905.40
  6. Step 6: Final answer
    x = 265,841.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.