Home / 311,930,543.20-468,903,584.40-287,744,072.80

Finding the Fourth Proportional to 311,930,543.20, 468,903,584.40 and 287,744,072.80

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Solution

The fourth proportional to 311,930,543.20, 468,903,584.40 and 287,744,072.80 is: 432,545,738.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,930,543.20 : 468,903,584.40 = 287,744,072.80 : x
  2. Step 2: Convert to fraction form
    311,930,543.20/468,903,584.40 = 287,744,072.80/x
  3. Step 3: Cross multiply
    311,930,543.20x = 468,903,584.40 × 287,744,072.80
  4. Step 4: Simplify right side
    311,930,543.20x = 134,924,227,125,774,544
  5. Step 5: Solve for x
    x = 134,924,227,125,774,544/311,930,543.20
  6. Step 6: Final answer
    x = 432,545,738.36

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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.