Home / 339,880.24-509,522.28-129,378.16

Finding the Fourth Proportional to 339,880.24, 509,522.28 and 129,378.16

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Solution

The fourth proportional to 339,880.24, 509,522.28 and 129,378.16 is: 193,953.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,880.24 : 509,522.28 = 129,378.16 : x
  2. Step 2: Convert to fraction form
    339,880.24/509,522.28 = 129,378.16/x
  3. Step 3: Cross multiply
    339,880.24x = 509,522.28 × 129,378.16
  4. Step 4: Simplify right side
    339,880.24x = 65,921,055,065.40
  5. Step 5: Solve for x
    x = 65,921,055,065.40/339,880.24
  6. Step 6: Final answer
    x = 193,953.77

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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.