Home / 311,899,139.40-467,848,709.10-81,891,474.60

Finding the Fourth Proportional to 311,899,139.40, 467,848,709.10 and 81,891,474.60

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Solution

The fourth proportional to 311,899,139.40, 467,848,709.10 and 81,891,474.60 is: 122,837,211.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,899,139.40 : 467,848,709.10 = 81,891,474.60 : x
  2. Step 2: Convert to fraction form
    311,899,139.40/467,848,709.10 = 81,891,474.60/x
  3. Step 3: Cross multiply
    311,899,139.40x = 467,848,709.10 × 81,891,474.60
  4. Step 4: Simplify right side
    311,899,139.40x = 38,312,820,677,905,440
  5. Step 5: Solve for x
    x = 38,312,820,677,905,440/311,899,139.40
  6. Step 6: Final answer
    x = 122,837,211.90

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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.