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Finding the Fourth Proportional to 208,334.88, 312,440.40 and 88,390.08

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Solution

The fourth proportional to 208,334.88, 312,440.40 and 88,390.08 is: 132,558.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,334.88 : 312,440.40 = 88,390.08 : x
  2. Step 2: Convert to fraction form
    208,334.88/312,440.40 = 88,390.08/x
  3. Step 3: Cross multiply
    208,334.88x = 312,440.40 × 88,390.08
  4. Step 4: Simplify right side
    208,334.88x = 27,616,631,951.23
  5. Step 5: Solve for x
    x = 27,616,631,951.23/208,334.88
  6. Step 6: Final answer
    x = 132,558.85

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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.