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Finding the Fourth Proportional to 219,016.80, 328,448.40 and 113,800.80

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Solution

The fourth proportional to 219,016.80, 328,448.40 and 113,800.80 is: 170,661.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,016.80 : 328,448.40 = 113,800.80 : x
  2. Step 2: Convert to fraction form
    219,016.80/328,448.40 = 113,800.80/x
  3. Step 3: Cross multiply
    219,016.80x = 328,448.40 × 113,800.80
  4. Step 4: Simplify right side
    219,016.80x = 37,377,690,678.72
  5. Step 5: Solve for x
    x = 37,377,690,678.72/219,016.80
  6. Step 6: Final answer
    x = 170,661.29

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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.