Home / 385,148,959.78-531,505,564.48-220,140,072.22

Finding the Fourth Proportional to 385,148,959.78, 531,505,564.48 and 220,140,072.22

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Solution

The fourth proportional to 385,148,959.78, 531,505,564.48 and 220,140,072.22 is: 303,793,299.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,148,959.78 : 531,505,564.48 = 220,140,072.22 : x
  2. Step 2: Convert to fraction form
    385,148,959.78/531,505,564.48 = 220,140,072.22/x
  3. Step 3: Cross multiply
    385,148,959.78x = 531,505,564.48 × 220,140,072.22
  4. Step 4: Simplify right side
    385,148,959.78x = 117,005,673,349,959,072
  5. Step 5: Solve for x
    x = 117,005,673,349,959,072/385,148,959.78
  6. Step 6: Final answer
    x = 303,793,299.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.