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Finding the Fourth Proportional to 219,030.80, 328,469.40 and 113,814.80

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Solution

The fourth proportional to 219,030.80, 328,469.40 and 113,814.80 is: 170,682.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,030.80 : 328,469.40 = 113,814.80 : x
  2. Step 2: Convert to fraction form
    219,030.80/328,469.40 = 113,814.80/x
  3. Step 3: Cross multiply
    219,030.80x = 328,469.40 × 113,814.80
  4. Step 4: Simplify right side
    219,030.80x = 37,384,679,067.12
  5. Step 5: Solve for x
    x = 37,384,679,067.12/219,030.80
  6. Step 6: Final answer
    x = 170,682.29

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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.