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Finding the Fourth Proportional to 440,195.50, 660,518.44 and 209,645.50

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Solution

The fourth proportional to 440,195.50, 660,518.44 and 209,645.50 is: 314,575.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,195.50 : 660,518.44 = 209,645.50 : x
  2. Step 2: Convert to fraction form
    440,195.50/660,518.44 = 209,645.50/x
  3. Step 3: Cross multiply
    440,195.50x = 660,518.44 × 209,645.50
  4. Step 4: Simplify right side
    440,195.50x = 138,474,718,613.02
  5. Step 5: Solve for x
    x = 138,474,718,613.02/440,195.50
  6. Step 6: Final answer
    x = 314,575.50

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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.