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Finding the Fourth Proportional to 213,652.55, 320,377.83 and 63,840.53

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Solution

The fourth proportional to 213,652.55, 320,377.83 and 63,840.53 is: 95,730.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,652.55 : 320,377.83 = 63,840.53 : x
  2. Step 2: Convert to fraction form
    213,652.55/320,377.83 = 63,840.53/x
  3. Step 3: Cross multiply
    213,652.55x = 320,377.83 × 63,840.53
  4. Step 4: Simplify right side
    213,652.55x = 20,453,090,467.45
  5. Step 5: Solve for x
    x = 20,453,090,467.45/213,652.55
  6. Step 6: Final answer
    x = 95,730.62

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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.