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Finding the Fourth Proportional to 220,254.70, 303,927.11 and 122,135.47

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Solution

The fourth proportional to 220,254.70, 303,927.11 and 122,135.47 is: 168,533.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,254.70 : 303,927.11 = 122,135.47 : x
  2. Step 2: Convert to fraction form
    220,254.70/303,927.11 = 122,135.47/x
  3. Step 3: Cross multiply
    220,254.70x = 303,927.11 × 122,135.47
  4. Step 4: Simplify right side
    220,254.70x = 37,120,279,967.58
  5. Step 5: Solve for x
    x = 37,120,279,967.58/220,254.70
  6. Step 6: Final answer
    x = 168,533.43

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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.