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Finding the Fourth Proportional to 486,993.49, 672,049.91 and 272,133.57

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Solution

The fourth proportional to 486,993.49, 672,049.91 and 272,133.57 is: 375,543.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,993.49 : 672,049.91 = 272,133.57 : x
  2. Step 2: Convert to fraction form
    486,993.49/672,049.91 = 272,133.57/x
  3. Step 3: Cross multiply
    486,993.49x = 672,049.91 × 272,133.57
  4. Step 4: Simplify right side
    486,993.49x = 182,887,344,427.00
  5. Step 5: Solve for x
    x = 182,887,344,427.00/486,993.49
  6. Step 6: Final answer
    x = 375,543.71

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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.