Home / 210,782.69-290,887.04-115,289.39

Finding the Fourth Proportional to 210,782.69, 290,887.04 and 115,289.39

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Solution

The fourth proportional to 210,782.69, 290,887.04 and 115,289.39 is: 159,103.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,782.69 : 290,887.04 = 115,289.39 : x
  2. Step 2: Convert to fraction form
    210,782.69/290,887.04 = 115,289.39/x
  3. Step 3: Cross multiply
    210,782.69x = 290,887.04 × 115,289.39
  4. Step 4: Simplify right side
    210,782.69x = 33,536,188,234.29
  5. Step 5: Solve for x
    x = 33,536,188,234.29/210,782.69
  6. Step 6: Final answer
    x = 159,103.14

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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.