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Finding the Fourth Proportional to 485,017.25, 669,218.24 and 294,077.57

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Solution

The fourth proportional to 485,017.25, 669,218.24 and 294,077.57 is: 405,763.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,017.25 : 669,218.24 = 294,077.57 : x
  2. Step 2: Convert to fraction form
    485,017.25/669,218.24 = 294,077.57/x
  3. Step 3: Cross multiply
    485,017.25x = 669,218.24 × 294,077.57
  4. Step 4: Simplify right side
    485,017.25x = 196,802,073,818.88
  5. Step 5: Solve for x
    x = 196,802,073,818.88/485,017.25
  6. Step 6: Final answer
    x = 405,763.04

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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.