Home / 208,560.36-287,828.05-117,917.21

Finding the Fourth Proportional to 208,560.36, 287,828.05 and 117,917.21

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Solution

The fourth proportional to 208,560.36, 287,828.05 and 117,917.21 is: 162,734.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,560.36 : 287,828.05 = 117,917.21 : x
  2. Step 2: Convert to fraction form
    208,560.36/287,828.05 = 117,917.21/x
  3. Step 3: Cross multiply
    208,560.36x = 287,828.05 × 117,917.21
  4. Step 4: Simplify right side
    208,560.36x = 33,939,880,615.74
  5. Step 5: Solve for x
    x = 33,939,880,615.74/208,560.36
  6. Step 6: Final answer
    x = 162,734.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.