Home / 280,728.07-421,127.05-109,927.73

Finding the Fourth Proportional to 280,728.07, 421,127.05 and 109,927.73

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Solution

The fourth proportional to 280,728.07, 421,127.05 and 109,927.73 is: 164,905.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,728.07 : 421,127.05 = 109,927.73 : x
  2. Step 2: Convert to fraction form
    280,728.07/421,127.05 = 109,927.73/x
  3. Step 3: Cross multiply
    280,728.07x = 421,127.05 × 109,927.73
  4. Step 4: Simplify right side
    280,728.07x = 46,293,541,426.09
  5. Step 5: Solve for x
    x = 46,293,541,426.09/280,728.07
  6. Step 6: Final answer
    x = 164,905.28

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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.