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Finding the Fourth Proportional to 306,619.80, 459,054.90 and 271,627.80

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Solution

The fourth proportional to 306,619.80, 459,054.90 and 271,627.80 is: 406,666.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,619.80 : 459,054.90 = 271,627.80 : x
  2. Step 2: Convert to fraction form
    306,619.80/459,054.90 = 271,627.80/x
  3. Step 3: Cross multiply
    306,619.80x = 459,054.90 × 271,627.80
  4. Step 4: Simplify right side
    306,619.80x = 124,692,072,566.22
  5. Step 5: Solve for x
    x = 124,692,072,566.22/306,619.80
  6. Step 6: Final answer
    x = 406,666.73

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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.