Home / 210,778.45-290,881.22-115,285.15

Finding the Fourth Proportional to 210,778.45, 290,881.22 and 115,285.15

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Solution

The fourth proportional to 210,778.45, 290,881.22 and 115,285.15 is: 159,097.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,778.45 : 290,881.22 = 115,285.15 : x
  2. Step 2: Convert to fraction form
    210,778.45/290,881.22 = 115,285.15/x
  3. Step 3: Cross multiply
    210,778.45x = 290,881.22 × 115,285.15
  4. Step 4: Simplify right side
    210,778.45x = 33,534,285,079.88
  5. Step 5: Solve for x
    x = 33,534,285,079.88/210,778.45
  6. Step 6: Final answer
    x = 159,097.31

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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.