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Finding the Fourth Proportional to 490,506.75, 735,359.45 and 253,917.63

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Solution

The fourth proportional to 490,506.75, 735,359.45 and 253,917.63 is: 380,669.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,506.75 : 735,359.45 = 253,917.63 : x
  2. Step 2: Convert to fraction form
    490,506.75/735,359.45 = 253,917.63/x
  3. Step 3: Cross multiply
    490,506.75x = 735,359.45 × 253,917.63
  4. Step 4: Simplify right side
    490,506.75x = 186,720,727,472.52
  5. Step 5: Solve for x
    x = 186,720,727,472.52/490,506.75
  6. Step 6: Final answer
    x = 380,669.03

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1.5x scale

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.