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Finding the Fourth Proportional to 208,687.70, 288,003.30 and 118,043.72

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Solution

The fourth proportional to 208,687.70, 288,003.30 and 118,043.72 is: 162,908.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,687.70 : 288,003.30 = 118,043.72 : x
  2. Step 2: Convert to fraction form
    208,687.70/288,003.30 = 118,043.72/x
  3. Step 3: Cross multiply
    208,687.70x = 288,003.30 × 118,043.72
  4. Step 4: Simplify right side
    208,687.70x = 33,996,980,904.28
  5. Step 5: Solve for x
    x = 33,996,980,904.28/208,687.70
  6. Step 6: Final answer
    x = 162,908.41

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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.