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Finding the Fourth Proportional to 254,693.73, 382,018.56 and 86,210.43

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Solution

The fourth proportional to 254,693.73, 382,018.56 and 86,210.43 is: 129,308.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,693.73 : 382,018.56 = 86,210.43 : x
  2. Step 2: Convert to fraction form
    254,693.73/382,018.56 = 86,210.43/x
  3. Step 3: Cross multiply
    254,693.73x = 382,018.56 × 86,210.43
  4. Step 4: Simplify right side
    254,693.73x = 32,933,984,325.58
  5. Step 5: Solve for x
    x = 32,933,984,325.58/254,693.73
  6. Step 6: Final answer
    x = 129,308.19

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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.