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Finding the Fourth Proportional to 208,845.36, 288,203.49 and 118,218.51

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Solution

The fourth proportional to 208,845.36, 288,203.49 and 118,218.51 is: 163,139.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,845.36 : 288,203.49 = 118,218.51 : x
  2. Step 2: Convert to fraction form
    208,845.36/288,203.49 = 118,218.51/x
  3. Step 3: Cross multiply
    208,845.36x = 288,203.49 × 118,218.51
  4. Step 4: Simplify right side
    208,845.36x = 34,070,987,164.60
  5. Step 5: Solve for x
    x = 34,070,987,164.60/208,845.36
  6. Step 6: Final answer
    x = 163,139.79

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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.