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Finding the Fourth Proportional to 210,630.78, 290,676.06 and 125,796.78

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Solution

The fourth proportional to 210,630.78, 290,676.06 and 125,796.78 is: 173,602.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,630.78 : 290,676.06 = 125,796.78 : x
  2. Step 2: Convert to fraction form
    210,630.78/290,676.06 = 125,796.78/x
  3. Step 3: Cross multiply
    210,630.78x = 290,676.06 × 125,796.78
  4. Step 4: Simplify right side
    210,630.78x = 36,566,112,371.09
  5. Step 5: Solve for x
    x = 36,566,112,371.09/210,630.78
  6. Step 6: Final answer
    x = 173,602.89

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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.