Home / 210,835.12-290,950.14-115,340.68

Finding the Fourth Proportional to 210,835.12, 290,950.14 and 115,340.68

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Solution

The fourth proportional to 210,835.12, 290,950.14 and 115,340.68 is: 159,168.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,835.12 : 290,950.14 = 115,340.68 : x
  2. Step 2: Convert to fraction form
    210,835.12/290,950.14 = 115,340.68/x
  3. Step 3: Cross multiply
    210,835.12x = 290,950.14 × 115,340.68
  4. Step 4: Simplify right side
    210,835.12x = 33,558,386,993.70
  5. Step 5: Solve for x
    x = 33,558,386,993.70/210,835.12
  6. Step 6: Final answer
    x = 159,168.87

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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.