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Finding the Fourth Proportional to 485,591.39, 728,462.07 and 165,668.30

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Solution

The fourth proportional to 485,591.39, 728,462.07 and 165,668.30 is: 248,528.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,591.39 : 728,462.07 = 165,668.30 : x
  2. Step 2: Convert to fraction form
    485,591.39/728,462.07 = 165,668.30/x
  3. Step 3: Cross multiply
    485,591.39x = 728,462.07 × 165,668.30
  4. Step 4: Simplify right side
    485,591.39x = 120,683,069,109.07
  5. Step 5: Solve for x
    x = 120,683,069,109.07/485,591.39
  6. Step 6: Final answer
    x = 248,528.03

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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.