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Finding the Fourth Proportional to 485,518.28, 728,364.92 and 148,552.60

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Solution

The fourth proportional to 485,518.28, 728,364.92 and 148,552.60 is: 222,855.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,518.28 : 728,364.92 = 148,552.60 : x
  2. Step 2: Convert to fraction form
    485,518.28/728,364.92 = 148,552.60/x
  3. Step 3: Cross multiply
    485,518.28x = 728,364.92 × 148,552.60
  4. Step 4: Simplify right side
    485,518.28x = 108,200,502,614.79
  5. Step 5: Solve for x
    x = 108,200,502,614.79/485,518.28
  6. Step 6: Final answer
    x = 222,855.67

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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.