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Finding the Fourth Proportional to 272,659,515.70, 409,246,136.70 and 143,359,920.40

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Solution

The fourth proportional to 272,659,515.70, 409,246,136.70 and 143,359,920.40 is: 215,174,935.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,659,515.70 : 409,246,136.70 = 143,359,920.40 : x
  2. Step 2: Convert to fraction form
    272,659,515.70/409,246,136.70 = 143,359,920.40/x
  3. Step 3: Cross multiply
    272,659,515.70x = 409,246,136.70 × 143,359,920.40
  4. Step 4: Simplify right side
    272,659,515.70x = 58,669,493,581,319,520
  5. Step 5: Solve for x
    x = 58,669,493,581,319,520/272,659,515.70
  6. Step 6: Final answer
    x = 215,174,935.05

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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.