Home / 217,752,511.20-326,628,766.80-81,409,682.40

Finding the Fourth Proportional to 217,752,511.20, 326,628,766.80 and 81,409,682.40

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Solution

The fourth proportional to 217,752,511.20, 326,628,766.80 and 81,409,682.40 is: 122,114,523.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,752,511.20 : 326,628,766.80 = 81,409,682.40 : x
  2. Step 2: Convert to fraction form
    217,752,511.20/326,628,766.80 = 81,409,682.40/x
  3. Step 3: Cross multiply
    217,752,511.20x = 326,628,766.80 × 81,409,682.40
  4. Step 4: Simplify right side
    217,752,511.20x = 26,590,744,167,891,668
  5. Step 5: Solve for x
    x = 26,590,744,167,891,668/217,752,511.20
  6. Step 6: Final answer
    x = 122,114,523.60

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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.