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Finding the Fourth Proportional to 272,648.40, 408,972.60 and 188,667.60

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Solution

The fourth proportional to 272,648.40, 408,972.60 and 188,667.60 is: 283,001.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,648.40 : 408,972.60 = 188,667.60 : x
  2. Step 2: Convert to fraction form
    272,648.40/408,972.60 = 188,667.60/x
  3. Step 3: Cross multiply
    272,648.40x = 408,972.60 × 188,667.60
  4. Step 4: Simplify right side
    272,648.40x = 77,159,878,907.76
  5. Step 5: Solve for x
    x = 77,159,878,907.76/272,648.40
  6. Step 6: Final answer
    x = 283,001.40

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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.