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Finding the Fourth Proportional to 188,212.80, 282,016.80 and 99,350.40

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Solution

The fourth proportional to 188,212.80, 282,016.80 and 99,350.40 is: 148,865.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,212.80 : 282,016.80 = 99,350.40 : x
  2. Step 2: Convert to fraction form
    188,212.80/282,016.80 = 99,350.40/x
  3. Step 3: Cross multiply
    188,212.80x = 282,016.80 × 99,350.40
  4. Step 4: Simplify right side
    188,212.80x = 28,018,481,886.72
  5. Step 5: Solve for x
    x = 28,018,481,886.72/188,212.80
  6. Step 6: Final answer
    x = 148,865.97

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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.