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Finding the Fourth Proportional to 208,365.62, 287,530.36 and 117,725.40

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Solution

The fourth proportional to 208,365.62, 287,530.36 and 117,725.40 is: 162,453.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,365.62 : 287,530.36 = 117,725.40 : x
  2. Step 2: Convert to fraction form
    208,365.62/287,530.36 = 117,725.40/x
  3. Step 3: Cross multiply
    208,365.62x = 287,530.36 × 117,725.40
  4. Step 4: Simplify right side
    208,365.62x = 33,849,626,348.83
  5. Step 5: Solve for x
    x = 33,849,626,348.83/208,365.62
  6. Step 6: Final answer
    x = 162,453.03

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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.