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Finding the Fourth Proportional to 291,310,239.80, 436,965,359.70 and 118,692,954.20

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Solution

The fourth proportional to 291,310,239.80, 436,965,359.70 and 118,692,954.20 is: 178,039,431.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,310,239.80 : 436,965,359.70 = 118,692,954.20 : x
  2. Step 2: Convert to fraction form
    291,310,239.80/436,965,359.70 = 118,692,954.20/x
  3. Step 3: Cross multiply
    291,310,239.80x = 436,965,359.70 × 118,692,954.20
  4. Step 4: Simplify right side
    291,310,239.80x = 51,864,709,425,858,624
  5. Step 5: Solve for x
    x = 51,864,709,425,858,624/291,310,239.80
  6. Step 6: Final answer
    x = 178,039,431.30

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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.