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Finding the Fourth Proportional to 210,630.60, 290,670.15 and 115,137.66

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Solution

The fourth proportional to 210,630.60, 290,670.15 and 115,137.66 is: 158,889.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,630.60 : 290,670.15 = 115,137.66 : x
  2. Step 2: Convert to fraction form
    210,630.60/290,670.15 = 115,137.66/x
  3. Step 3: Cross multiply
    210,630.60x = 290,670.15 × 115,137.66
  4. Step 4: Simplify right side
    210,630.60x = 33,467,080,902.85
  5. Step 5: Solve for x
    x = 33,467,080,902.85/210,630.60
  6. Step 6: Final answer
    x = 158,889.93

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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.