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Finding the Fourth Proportional to 324,750.12, 487,000.58 and 111,478.28

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Solution

The fourth proportional to 324,750.12, 487,000.58 and 111,478.28 is: 167,174.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,750.12 : 487,000.58 = 111,478.28 : x
  2. Step 2: Convert to fraction form
    324,750.12/487,000.58 = 111,478.28/x
  3. Step 3: Cross multiply
    324,750.12x = 487,000.58 × 111,478.28
  4. Step 4: Simplify right side
    324,750.12x = 54,289,984,025.01
  5. Step 5: Solve for x
    x = 54,289,984,025.01/324,750.12
  6. Step 6: Final answer
    x = 167,174.64

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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.