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Finding the Fourth Proportional to 208,667.52, 287,956.68 and 118,011.60

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Solution

The fourth proportional to 208,667.52, 287,956.68 and 118,011.60 is: 162,853.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,667.52 : 287,956.68 = 118,011.60 : x
  2. Step 2: Convert to fraction form
    208,667.52/287,956.68 = 118,011.60/x
  3. Step 3: Cross multiply
    208,667.52x = 287,956.68 × 118,011.60
  4. Step 4: Simplify right side
    208,667.52x = 33,982,228,537.49
  5. Step 5: Solve for x
    x = 33,982,228,537.49/208,667.52
  6. Step 6: Final answer
    x = 162,853.46

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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.