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Finding the Fourth Proportional to 485,242.72, 669,625.93 and 270,378.21

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Solution

The fourth proportional to 485,242.72, 669,625.93 and 270,378.21 is: 373,116.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,242.72 : 669,625.93 = 270,378.21 : x
  2. Step 2: Convert to fraction form
    485,242.72/669,625.93 = 270,378.21/x
  3. Step 3: Cross multiply
    485,242.72x = 669,625.93 × 270,378.21
  4. Step 4: Simplify right side
    485,242.72x = 181,052,260,322.99
  5. Step 5: Solve for x
    x = 181,052,260,322.99/485,242.72
  6. Step 6: Final answer
    x = 373,116.90

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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.