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Finding the Fourth Proportional to 384,739.65, 577,054.80 and 132,031.80

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Solution

The fourth proportional to 384,739.65, 577,054.80 and 132,031.80 is: 198,028.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,739.65 : 577,054.80 = 132,031.80 : x
  2. Step 2: Convert to fraction form
    384,739.65/577,054.80 = 132,031.80/x
  3. Step 3: Cross multiply
    384,739.65x = 577,054.80 × 132,031.80
  4. Step 4: Simplify right side
    384,739.65x = 76,189,583,942.64
  5. Step 5: Solve for x
    x = 76,189,583,942.64/384,739.65
  6. Step 6: Final answer
    x = 198,028.94

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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.