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Finding the Fourth Proportional to 265,848.69, 398,428.59 and 107,991.03

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Solution

The fourth proportional to 265,848.69, 398,428.59 and 107,991.03 is: 161,846.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,848.69 : 398,428.59 = 107,991.03 : x
  2. Step 2: Convert to fraction form
    265,848.69/398,428.59 = 107,991.03/x
  3. Step 3: Cross multiply
    265,848.69x = 398,428.59 × 107,991.03
  4. Step 4: Simplify right side
    265,848.69x = 43,026,713,815.55
  5. Step 5: Solve for x
    x = 43,026,713,815.55/265,848.69
  6. Step 6: Final answer
    x = 161,846.63

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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.