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Finding the Fourth Proportional to 339,768, 509,656.32 and 118,152

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Solution

The fourth proportional to 339,768, 509,656.32 and 118,152 is: 177,229.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,768 : 509,656.32 = 118,152 : x
  2. Step 2: Convert to fraction form
    339,768/509,656.32 = 118,152/x
  3. Step 3: Cross multiply
    339,768x = 509,656.32 × 118,152
  4. Step 4: Simplify right side
    339,768x = 60,216,913,520.64
  5. Step 5: Solve for x
    x = 60,216,913,520.64/339,768
  6. Step 6: Final answer
    x = 177,229.50

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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.