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Finding the Fourth Proportional to 485,216.22, 669,589.47 and 270,351.66

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Solution

The fourth proportional to 485,216.22, 669,589.47 and 270,351.66 is: 373,080.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,216.22 : 669,589.47 = 270,351.66 : x
  2. Step 2: Convert to fraction form
    485,216.22/669,589.47 = 270,351.66/x
  3. Step 3: Cross multiply
    485,216.22x = 669,589.47 × 270,351.66
  4. Step 4: Simplify right side
    485,216.22x = 181,024,624,733.02
  5. Step 5: Solve for x
    x = 181,024,624,733.02/485,216.22
  6. Step 6: Final answer
    x = 373,080.32

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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.