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Finding the Fourth Proportional to 207,879.82, 286,872.89 and 112,386.29

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Solution

The fourth proportional to 207,879.82, 286,872.89 and 112,386.29 is: 155,092.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,879.82 : 286,872.89 = 112,386.29 : x
  2. Step 2: Convert to fraction form
    207,879.82/286,872.89 = 112,386.29/x
  3. Step 3: Cross multiply
    207,879.82x = 286,872.89 × 112,386.29
  4. Step 4: Simplify right side
    207,879.82x = 32,240,578,444.56
  5. Step 5: Solve for x
    x = 32,240,578,444.56/207,879.82
  6. Step 6: Final answer
    x = 155,092.39

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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.