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Finding the Fourth Proportional to 339,979.70, 509,969.55 and 118,363.70

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Solution

The fourth proportional to 339,979.70, 509,969.55 and 118,363.70 is: 177,545.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,979.70 : 509,969.55 = 118,363.70 : x
  2. Step 2: Convert to fraction form
    339,979.70/509,969.55 = 118,363.70/x
  3. Step 3: Cross multiply
    339,979.70x = 509,969.55 × 118,363.70
  4. Step 4: Simplify right side
    339,979.70x = 60,361,882,825.34
  5. Step 5: Solve for x
    x = 60,361,882,825.34/339,979.70
  6. Step 6: Final answer
    x = 177,545.55

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1.5x scale

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.