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Finding the Fourth Proportional to 220,955.20, 331,486.80 and 102,601.60

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Solution

The fourth proportional to 220,955.20, 331,486.80 and 102,601.60 is: 153,927.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,955.20 : 331,486.80 = 102,601.60 : x
  2. Step 2: Convert to fraction form
    220,955.20/331,486.80 = 102,601.60/x
  3. Step 3: Cross multiply
    220,955.20x = 331,486.80 × 102,601.60
  4. Step 4: Simplify right side
    220,955.20x = 34,011,076,058.88
  5. Step 5: Solve for x
    x = 34,011,076,058.88/220,955.20
  6. Step 6: Final answer
    x = 153,927.48

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1.5x scale

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.