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Finding the Fourth Proportional to 289,963.18, 434,943.96 and 79,601.32

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Solution

The fourth proportional to 289,963.18, 434,943.96 and 79,601.32 is: 119,401.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,963.18 : 434,943.96 = 79,601.32 : x
  2. Step 2: Convert to fraction form
    289,963.18/434,943.96 = 79,601.32/x
  3. Step 3: Cross multiply
    289,963.18x = 434,943.96 × 79,601.32
  4. Step 4: Simplify right side
    289,963.18x = 34,622,113,342.03
  5. Step 5: Solve for x
    x = 34,622,113,342.03/289,963.18
  6. Step 6: Final answer
    x = 119,401.76

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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.