Home / 219,431,432.87-329,154,087.57-81,291,611.78

Finding the Fourth Proportional to 219,431,432.87, 329,154,087.57 and 81,291,611.78

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Solution

The fourth proportional to 219,431,432.87, 329,154,087.57 and 81,291,611.78 is: 121,939,988.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,431,432.87 : 329,154,087.57 = 81,291,611.78 : x
  2. Step 2: Convert to fraction form
    219,431,432.87/329,154,087.57 = 81,291,611.78/x
  3. Step 3: Cross multiply
    219,431,432.87x = 329,154,087.57 × 81,291,611.78
  4. Step 4: Simplify right side
    219,431,432.87x = 26,757,466,302,540,564
  5. Step 5: Solve for x
    x = 26,757,466,302,540,564/219,431,432.87
  6. Step 6: Final answer
    x = 121,939,988.05

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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.