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Finding the Fourth Proportional to 393,272.70, 542,762.40 and 223,532.34

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Solution

The fourth proportional to 393,272.70, 542,762.40 and 223,532.34 is: 308,500.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,272.70 : 542,762.40 = 223,532.34 : x
  2. Step 2: Convert to fraction form
    393,272.70/542,762.40 = 223,532.34/x
  3. Step 3: Cross multiply
    393,272.70x = 542,762.40 × 223,532.34
  4. Step 4: Simplify right side
    393,272.70x = 121,324,949,336.02
  5. Step 5: Solve for x
    x = 121,324,949,336.02/393,272.70
  6. Step 6: Final answer
    x = 308,500.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.