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Finding the Fourth Proportional to 478,165.20, 659,842.20 and 274,224.72

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Solution

The fourth proportional to 478,165.20, 659,842.20 and 274,224.72 is: 378,415.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,165.20 : 659,842.20 = 274,224.72 : x
  2. Step 2: Convert to fraction form
    478,165.20/659,842.20 = 274,224.72/x
  3. Step 3: Cross multiply
    478,165.20x = 659,842.20 × 274,224.72
  4. Step 4: Simplify right side
    478,165.20x = 180,945,042,539.18
  5. Step 5: Solve for x
    x = 180,945,042,539.18/478,165.20
  6. Step 6: Final answer
    x = 378,415.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.