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Finding the Fourth Proportional to 278,980.44, 385,000.98 and 170,091.06

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Solution

The fourth proportional to 278,980.44, 385,000.98 and 170,091.06 is: 234,730.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,980.44 : 385,000.98 = 170,091.06 : x
  2. Step 2: Convert to fraction form
    278,980.44/385,000.98 = 170,091.06/x
  3. Step 3: Cross multiply
    278,980.44x = 385,000.98 × 170,091.06
  4. Step 4: Simplify right side
    278,980.44x = 65,485,224,789.24
  5. Step 5: Solve for x
    x = 65,485,224,789.24/278,980.44
  6. Step 6: Final answer
    x = 234,730.52

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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.