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Finding the Fourth Proportional to 207,326.54, 286,198.91 and 139,382.93

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Solution

The fourth proportional to 207,326.54, 286,198.91 and 139,382.93 is: 192,407.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,326.54 : 286,198.91 = 139,382.93 : x
  2. Step 2: Convert to fraction form
    207,326.54/286,198.91 = 139,382.93/x
  3. Step 3: Cross multiply
    207,326.54x = 286,198.91 × 139,382.93
  4. Step 4: Simplify right side
    207,326.54x = 39,891,240,510.70
  5. Step 5: Solve for x
    x = 39,891,240,510.70/207,326.54
  6. Step 6: Final answer
    x = 192,407.79

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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.