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Finding the Fourth Proportional to 209,363.99, 313,855.93 and 76,150.07

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Solution

The fourth proportional to 209,363.99, 313,855.93 and 76,150.07 is: 114,155.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,363.99 : 313,855.93 = 76,150.07 : x
  2. Step 2: Convert to fraction form
    209,363.99/313,855.93 = 76,150.07/x
  3. Step 3: Cross multiply
    209,363.99x = 313,855.93 × 76,150.07
  4. Step 4: Simplify right side
    209,363.99x = 23,900,149,279.76
  5. Step 5: Solve for x
    x = 23,900,149,279.76/209,363.99
  6. Step 6: Final answer
    x = 114,155.97

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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.