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Finding the Fourth Proportional to 210,592.50, 290,617.11 and 115,099.85

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Solution

The fourth proportional to 210,592.50, 290,617.11 and 115,099.85 is: 158,837.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,592.50 : 290,617.11 = 115,099.85 : x
  2. Step 2: Convert to fraction form
    210,592.50/290,617.11 = 115,099.85/x
  3. Step 3: Cross multiply
    210,592.50x = 290,617.11 × 115,099.85
  4. Step 4: Simplify right side
    210,592.50x = 33,449,984,315.35
  5. Step 5: Solve for x
    x = 33,449,984,315.35/210,592.50
  6. Step 6: Final answer
    x = 158,837.49

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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.