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Finding the Fourth Proportional to 208,335.88, 312,441.90 and 88,391.08

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Solution

The fourth proportional to 208,335.88, 312,441.90 and 88,391.08 is: 132,560.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,335.88 : 312,441.90 = 88,391.08 : x
  2. Step 2: Convert to fraction form
    208,335.88/312,441.90 = 88,391.08/x
  3. Step 3: Cross multiply
    208,335.88x = 312,441.90 × 88,391.08
  4. Step 4: Simplify right side
    208,335.88x = 27,617,076,978.25
  5. Step 5: Solve for x
    x = 27,617,076,978.25/208,335.88
  6. Step 6: Final answer
    x = 132,560.35

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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.