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Finding the Fourth Proportional to 478,179.88, 717,268.70 and 145,755.88

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Solution

The fourth proportional to 478,179.88, 717,268.70 and 145,755.88 is: 218,633.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,179.88 : 717,268.70 = 145,755.88 : x
  2. Step 2: Convert to fraction form
    478,179.88/717,268.70 = 145,755.88/x
  3. Step 3: Cross multiply
    478,179.88x = 717,268.70 × 145,755.88
  4. Step 4: Simplify right side
    478,179.88x = 104,546,130,564.96
  5. Step 5: Solve for x
    x = 104,546,130,564.96/478,179.88
  6. Step 6: Final answer
    x = 218,633.48

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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.