Home / 210,513.20-290,512.58-115,026.21

Finding the Fourth Proportional to 210,513.20, 290,512.58 and 115,026.21

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Solution

The fourth proportional to 210,513.20, 290,512.58 and 115,026.21 is: 158,738.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,513.20 : 290,512.58 = 115,026.21 : x
  2. Step 2: Convert to fraction form
    210,513.20/290,512.58 = 115,026.21/x
  3. Step 3: Cross multiply
    210,513.20x = 290,512.58 × 115,026.21
  4. Step 4: Simplify right side
    210,513.20x = 33,416,560,459.59
  5. Step 5: Solve for x
    x = 33,416,560,459.59/210,513.20
  6. Step 6: Final answer
    x = 158,738.56

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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.