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Finding the Fourth Proportional to 248,121.70, 372,184.80 and 70,628.64

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Solution

The fourth proportional to 248,121.70, 372,184.80 and 70,628.64 is: 105,943.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,121.70 : 372,184.80 = 70,628.64 : x
  2. Step 2: Convert to fraction form
    248,121.70/372,184.80 = 70,628.64/x
  3. Step 3: Cross multiply
    248,121.70x = 372,184.80 × 70,628.64
  4. Step 4: Simplify right side
    248,121.70x = 26,286,906,252.67
  5. Step 5: Solve for x
    x = 26,286,906,252.67/248,121.70
  6. Step 6: Final answer
    x = 105,943.60

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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.