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Finding the Fourth Proportional to 339,880.87, 509,712.16 and 112,125.29

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Solution

The fourth proportional to 339,880.87, 509,712.16 and 112,125.29 is: 168,151.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,880.87 : 509,712.16 = 112,125.29 : x
  2. Step 2: Convert to fraction form
    339,880.87/509,712.16 = 112,125.29/x
  3. Step 3: Cross multiply
    339,880.87x = 509,712.16 × 112,125.29
  4. Step 4: Simplify right side
    339,880.87x = 57,151,623,756.53
  5. Step 5: Solve for x
    x = 57,151,623,756.53/339,880.87
  6. Step 6: Final answer
    x = 168,151.93

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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.