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Finding the Fourth Proportional to 209,289.57, 313,934.32 and 61,545.57

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Solution

The fourth proportional to 209,289.57, 313,934.32 and 61,545.57 is: 92,318.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,289.57 : 313,934.32 = 61,545.57 : x
  2. Step 2: Convert to fraction form
    209,289.57/313,934.32 = 61,545.57/x
  3. Step 3: Cross multiply
    209,289.57x = 313,934.32 × 61,545.57
  4. Step 4: Simplify right side
    209,289.57x = 19,321,266,666.96
  5. Step 5: Solve for x
    x = 19,321,266,666.96/209,289.57
  6. Step 6: Final answer
    x = 92,318.34

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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.