Home / 485,198-669,586.20-270,347.12

Finding the Fourth Proportional to 485,198, 669,586.20 and 270,347.12

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Solution

The fourth proportional to 485,198, 669,586.20 and 270,347.12 is: 373,086.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,198 : 669,586.20 = 270,347.12 : x
  2. Step 2: Convert to fraction form
    485,198/669,586.20 = 270,347.12/x
  3. Step 3: Cross multiply
    485,198x = 669,586.20 × 270,347.12
  4. Step 4: Simplify right side
    485,198x = 181,020,700,761.74
  5. Step 5: Solve for x
    x = 181,020,700,761.74/485,198
  6. Step 6: Final answer
    x = 373,086.25

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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.