Home / 385,148,965.41-531,505,572.32-220,140,077.85

Finding the Fourth Proportional to 385,148,965.41, 531,505,572.32 and 220,140,077.85

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Solution

The fourth proportional to 385,148,965.41, 531,505,572.32 and 220,140,077.85 is: 303,793,307.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,148,965.41 : 531,505,572.32 = 220,140,077.85 : x
  2. Step 2: Convert to fraction form
    385,148,965.41/531,505,572.32 = 220,140,077.85/x
  3. Step 3: Cross multiply
    385,148,965.41x = 531,505,572.32 × 220,140,077.85
  4. Step 4: Simplify right side
    385,148,965.41x = 117,005,678,067,132,896
  5. Step 5: Solve for x
    x = 117,005,678,067,132,896/385,148,965.41
  6. Step 6: Final answer
    x = 303,793,307.46

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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.