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Finding the Fourth Proportional to 208,705.84, 288,011.70 and 118,060.36

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Solution

The fourth proportional to 208,705.84, 288,011.70 and 118,060.36 is: 162,921.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,705.84 : 288,011.70 = 118,060.36 : x
  2. Step 2: Convert to fraction form
    208,705.84/288,011.70 = 118,060.36/x
  3. Step 3: Cross multiply
    208,705.84x = 288,011.70 × 118,060.36
  4. Step 4: Simplify right side
    208,705.84x = 34,002,764,986.21
  5. Step 5: Solve for x
    x = 34,002,764,986.21/208,705.84
  6. Step 6: Final answer
    x = 162,921.96

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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.