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Finding the Fourth Proportional to 248,405.40, 372,614.24 and 90,633.84

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Solution

The fourth proportional to 248,405.40, 372,614.24 and 90,633.84 is: 135,953.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,405.40 : 372,614.24 = 90,633.84 : x
  2. Step 2: Convert to fraction form
    248,405.40/372,614.24 = 90,633.84/x
  3. Step 3: Cross multiply
    248,405.40x = 372,614.24 × 90,633.84
  4. Step 4: Simplify right side
    248,405.40x = 33,771,461,033.77
  5. Step 5: Solve for x
    x = 33,771,461,033.77/248,405.40
  6. Step 6: Final answer
    x = 135,953.01

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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.