Home / 217,492,086.80-326,238,130.20-209,131,331.60

Finding the Fourth Proportional to 217,492,086.80, 326,238,130.20 and 209,131,331.60

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Solution

The fourth proportional to 217,492,086.80, 326,238,130.20 and 209,131,331.60 is: 313,696,997.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,492,086.80 : 326,238,130.20 = 209,131,331.60 : x
  2. Step 2: Convert to fraction form
    217,492,086.80/326,238,130.20 = 209,131,331.60/x
  3. Step 3: Cross multiply
    217,492,086.80x = 326,238,130.20 × 209,131,331.60
  4. Step 4: Simplify right side
    217,492,086.80x = 68,226,614,587,420,168
  5. Step 5: Solve for x
    x = 68,226,614,587,420,168/217,492,086.80
  6. Step 6: Final answer
    x = 313,696,997.40

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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.