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Finding the Fourth Proportional to 208,370.90, 287,551.14 and 112,877.48

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Solution

The fourth proportional to 208,370.90, 287,551.14 and 112,877.48 is: 155,770.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,370.90 : 287,551.14 = 112,877.48 : x
  2. Step 2: Convert to fraction form
    208,370.90/287,551.14 = 112,877.48/x
  3. Step 3: Cross multiply
    208,370.90x = 287,551.14 × 112,877.48
  4. Step 4: Simplify right side
    208,370.90x = 32,458,048,054.33
  5. Step 5: Solve for x
    x = 32,458,048,054.33/208,370.90
  6. Step 6: Final answer
    x = 155,770.54

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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.