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Finding the Fourth Proportional to 217,314,829.40, 325,860,269.70 and 80,930,010.20

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Solution

The fourth proportional to 217,314,829.40, 325,860,269.70 and 80,930,010.20 is: 121,353,315.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,314,829.40 : 325,860,269.70 = 80,930,010.20 : x
  2. Step 2: Convert to fraction form
    217,314,829.40/325,860,269.70 = 80,930,010.20/x
  3. Step 3: Cross multiply
    217,314,829.40x = 325,860,269.70 × 80,930,010.20
  4. Step 4: Simplify right side
    217,314,829.40x = 26,371,874,950,595,752
  5. Step 5: Solve for x
    x = 26,371,874,950,595,752/217,314,829.40
  6. Step 6: Final answer
    x = 121,353,315.02

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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.