Home / 320,436,305.70-480,654,458.55-212,730,929.70

Finding the Fourth Proportional to 320,436,305.70, 480,654,458.55 and 212,730,929.70

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Solution

The fourth proportional to 320,436,305.70, 480,654,458.55 and 212,730,929.70 is: 319,096,394.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,436,305.70 : 480,654,458.55 = 212,730,929.70 : x
  2. Step 2: Convert to fraction form
    320,436,305.70/480,654,458.55 = 212,730,929.70/x
  3. Step 3: Cross multiply
    320,436,305.70x = 480,654,458.55 × 212,730,929.70
  4. Step 4: Simplify right side
    320,436,305.70x = 102,250,069,831,791,616
  5. Step 5: Solve for x
    x = 102,250,069,831,791,616/320,436,305.70
  6. Step 6: Final answer
    x = 319,096,394.55

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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.