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Finding the Fourth Proportional to 220,235.66, 303,946.54 and 123,455.95

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Solution

The fourth proportional to 220,235.66, 303,946.54 and 123,455.95 is: 170,381.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,235.66 : 303,946.54 = 123,455.95 : x
  2. Step 2: Convert to fraction form
    220,235.66/303,946.54 = 123,455.95/x
  3. Step 3: Cross multiply
    220,235.66x = 303,946.54 × 123,455.95
  4. Step 4: Simplify right side
    220,235.66x = 37,524,008,844.91
  5. Step 5: Solve for x
    x = 37,524,008,844.91/220,235.66
  6. Step 6: Final answer
    x = 170,381.17

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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.