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Finding the Fourth Proportional to 485,593.40, 727,806.90 and 248,814.20

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Solution

The fourth proportional to 485,593.40, 727,806.90 and 248,814.20 is: 372,922.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,593.40 : 727,806.90 = 248,814.20 : x
  2. Step 2: Convert to fraction form
    485,593.40/727,806.90 = 248,814.20/x
  3. Step 3: Cross multiply
    485,593.40x = 727,806.90 × 248,814.20
  4. Step 4: Simplify right side
    485,593.40x = 181,088,691,577.98
  5. Step 5: Solve for x
    x = 181,088,691,577.98/485,593.40
  6. Step 6: Final answer
    x = 372,922.47

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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.