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Finding the Fourth Proportional to 485,213.22, 727,571.34 and 260,762.64

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Solution

The fourth proportional to 485,213.22, 727,571.34 and 260,762.64 is: 391,010.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,213.22 : 727,571.34 = 260,762.64 : x
  2. Step 2: Convert to fraction form
    485,213.22/727,571.34 = 260,762.64/x
  3. Step 3: Cross multiply
    485,213.22x = 727,571.34 × 260,762.64
  4. Step 4: Simplify right side
    485,213.22x = 189,723,423,406.74
  5. Step 5: Solve for x
    x = 189,723,423,406.74/485,213.22
  6. Step 6: Final answer
    x = 391,010.42

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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.