Home / 219,276.60-328,914.90-78,984.60

Finding the Fourth Proportional to 219,276.60, 328,914.90 and 78,984.60

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Solution

The fourth proportional to 219,276.60, 328,914.90 and 78,984.60 is: 118,476.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,276.60 : 328,914.90 = 78,984.60 : x
  2. Step 2: Convert to fraction form
    219,276.60/328,914.90 = 78,984.60/x
  3. Step 3: Cross multiply
    219,276.60x = 328,914.90 × 78,984.60
  4. Step 4: Simplify right side
    219,276.60x = 25,979,211,810.54
  5. Step 5: Solve for x
    x = 25,979,211,810.54/219,276.60
  6. Step 6: Final answer
    x = 118,476.90

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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.