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Finding the Fourth Proportional to 208,040.64, 287,024.76 and 117,385.44

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Solution

The fourth proportional to 208,040.64, 287,024.76 and 117,385.44 is: 161,951.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,040.64 : 287,024.76 = 117,385.44 : x
  2. Step 2: Convert to fraction form
    208,040.64/287,024.76 = 117,385.44/x
  3. Step 3: Cross multiply
    208,040.64x = 287,024.76 × 117,385.44
  4. Step 4: Simplify right side
    208,040.64x = 33,692,527,743.49
  5. Step 5: Solve for x
    x = 33,692,527,743.49/208,040.64
  6. Step 6: Final answer
    x = 161,951.66

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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.