Home / 320,436,385.70-480,654,578.55-212,731,009.70

Finding the Fourth Proportional to 320,436,385.70, 480,654,578.55 and 212,731,009.70

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Solution

The fourth proportional to 320,436,385.70, 480,654,578.55 and 212,731,009.70 is: 319,096,514.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,436,385.70 : 480,654,578.55 = 212,731,009.70 : x
  2. Step 2: Convert to fraction form
    320,436,385.70/480,654,578.55 = 212,731,009.70/x
  3. Step 3: Cross multiply
    320,436,385.70x = 480,654,578.55 × 212,731,009.70
  4. Step 4: Simplify right side
    320,436,385.70x = 102,250,133,811,869,456
  5. Step 5: Solve for x
    x = 102,250,133,811,869,456/320,436,385.70
  6. Step 6: Final answer
    x = 319,096,514.55

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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.