Home / 210,815.14-290,922.52-115,320.68

Finding the Fourth Proportional to 210,815.14, 290,922.52 and 115,320.68

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Solution

The fourth proportional to 210,815.14, 290,922.52 and 115,320.68 is: 159,141.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,815.14 : 290,922.52 = 115,320.68 : x
  2. Step 2: Convert to fraction form
    210,815.14/290,922.52 = 115,320.68/x
  3. Step 3: Cross multiply
    210,815.14x = 290,922.52 × 115,320.68
  4. Step 4: Simplify right side
    210,815.14x = 33,549,382,833.71
  5. Step 5: Solve for x
    x = 33,549,382,833.71/210,815.14
  6. Step 6: Final answer
    x = 159,141.24

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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.