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Finding the Fourth Proportional to 305,467.20, 458,200.80 and 266,101.20

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Solution

The fourth proportional to 305,467.20, 458,200.80 and 266,101.20 is: 399,151.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,467.20 : 458,200.80 = 266,101.20 : x
  2. Step 2: Convert to fraction form
    305,467.20/458,200.80 = 266,101.20/x
  3. Step 3: Cross multiply
    305,467.20x = 458,200.80 × 266,101.20
  4. Step 4: Simplify right side
    305,467.20x = 121,927,782,720.96
  5. Step 5: Solve for x
    x = 121,927,782,720.96/305,467.20
  6. Step 6: Final answer
    x = 399,151.80

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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.