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Finding the Fourth Proportional to 205,081.20, 307,621.80 and 195,404.40

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Solution

The fourth proportional to 205,081.20, 307,621.80 and 195,404.40 is: 293,106.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,081.20 : 307,621.80 = 195,404.40 : x
  2. Step 2: Convert to fraction form
    205,081.20/307,621.80 = 195,404.40/x
  3. Step 3: Cross multiply
    205,081.20x = 307,621.80 × 195,404.40
  4. Step 4: Simplify right side
    205,081.20x = 60,110,653,255.92
  5. Step 5: Solve for x
    x = 60,110,653,255.92/205,081.20
  6. Step 6: Final answer
    x = 293,106.60

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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.