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Finding the Fourth Proportional to 287,996.77, 397,432.73 and 158,936.43

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Solution

The fourth proportional to 287,996.77, 397,432.73 and 158,936.43 is: 219,330.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,996.77 : 397,432.73 = 158,936.43 : x
  2. Step 2: Convert to fraction form
    287,996.77/397,432.73 = 158,936.43/x
  3. Step 3: Cross multiply
    287,996.77x = 397,432.73 × 158,936.43
  4. Step 4: Simplify right side
    287,996.77x = 63,166,538,029.49
  5. Step 5: Solve for x
    x = 63,166,538,029.49/287,996.77
  6. Step 6: Final answer
    x = 219,330.72

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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.