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Finding the Fourth Proportional to 451,430.56, 676,562.64 and 214,845.76

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Solution

The fourth proportional to 451,430.56, 676,562.64 and 214,845.76 is: 321,991.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,430.56 : 676,562.64 = 214,845.76 : x
  2. Step 2: Convert to fraction form
    451,430.56/676,562.64 = 214,845.76/x
  3. Step 3: Cross multiply
    451,430.56x = 676,562.64 × 214,845.76
  4. Step 4: Simplify right side
    451,430.56x = 145,356,614,578.41
  5. Step 5: Solve for x
    x = 145,356,614,578.41/451,430.56
  6. Step 6: Final answer
    x = 321,991.08

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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.