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Finding the Fourth Proportional to 453,929, 680,893.50 and 121,505

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Solution

The fourth proportional to 453,929, 680,893.50 and 121,505 is: 182,257.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,929 : 680,893.50 = 121,505 : x
  2. Step 2: Convert to fraction form
    453,929/680,893.50 = 121,505/x
  3. Step 3: Cross multiply
    453,929x = 680,893.50 × 121,505
  4. Step 4: Simplify right side
    453,929x = 82,731,964,717.50
  5. Step 5: Solve for x
    x = 82,731,964,717.50/453,929
  6. Step 6: Final answer
    x = 182,257.50

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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.