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Finding the Fourth Proportional to 219,295.32, 328,905.54 and 79,033.56

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Solution

The fourth proportional to 219,295.32, 328,905.54 and 79,033.56 is: 118,536.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,295.32 : 328,905.54 = 79,033.56 : x
  2. Step 2: Convert to fraction form
    219,295.32/328,905.54 = 79,033.56/x
  3. Step 3: Cross multiply
    219,295.32x = 328,905.54 × 79,033.56
  4. Step 4: Simplify right side
    219,295.32x = 25,994,575,729.92
  5. Step 5: Solve for x
    x = 25,994,575,729.92/219,295.32
  6. Step 6: Final answer
    x = 118,536.85

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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.