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Finding the Fourth Proportional to 205,616.60, 308,136.90 and 163,568.60

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Solution

The fourth proportional to 205,616.60, 308,136.90 and 163,568.60 is: 245,123.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,616.60 : 308,136.90 = 163,568.60 : x
  2. Step 2: Convert to fraction form
    205,616.60/308,136.90 = 163,568.60/x
  3. Step 3: Cross multiply
    205,616.60x = 308,136.90 × 163,568.60
  4. Step 4: Simplify right side
    205,616.60x = 50,401,521,341.34
  5. Step 5: Solve for x
    x = 50,401,521,341.34/205,616.60
  6. Step 6: Final answer
    x = 245,123.80

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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.