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Finding the Fourth Proportional to 219,010.80, 328,289.40 and 118,959.60

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Solution

The fourth proportional to 219,010.80, 328,289.40 and 118,959.60 is: 178,316.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,010.80 : 328,289.40 = 118,959.60 : x
  2. Step 2: Convert to fraction form
    219,010.80/328,289.40 = 118,959.60/x
  3. Step 3: Cross multiply
    219,010.80x = 328,289.40 × 118,959.60
  4. Step 4: Simplify right side
    219,010.80x = 39,053,175,708.24
  5. Step 5: Solve for x
    x = 39,053,175,708.24/219,010.80
  6. Step 6: Final answer
    x = 178,316.21

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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.