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Finding the Fourth Proportional to 339,573.62, 509,462.28 and 137,065.52

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Solution

The fourth proportional to 339,573.62, 509,462.28 and 137,065.52 is: 205,639.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,573.62 : 509,462.28 = 137,065.52 : x
  2. Step 2: Convert to fraction form
    339,573.62/509,462.28 = 137,065.52/x
  3. Step 3: Cross multiply
    339,573.62x = 509,462.28 × 137,065.52
  4. Step 4: Simplify right side
    339,573.62x = 69,829,712,328.59
  5. Step 5: Solve for x
    x = 69,829,712,328.59/339,573.62
  6. Step 6: Final answer
    x = 205,639.39

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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.