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Finding the Fourth Proportional to 561,190.90, 841,910.74 and 161,800.51

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Solution

The fourth proportional to 561,190.90, 841,910.74 and 161,800.51 is: 242,736.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,190.90 : 841,910.74 = 161,800.51 : x
  2. Step 2: Convert to fraction form
    561,190.90/841,910.74 = 161,800.51/x
  3. Step 3: Cross multiply
    561,190.90x = 841,910.74 × 161,800.51
  4. Step 4: Simplify right side
    561,190.90x = 136,221,584,597.20
  5. Step 5: Solve for x
    x = 136,221,584,597.20/561,190.90
  6. Step 6: Final answer
    x = 242,736.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.