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Finding the Fourth Proportional to 645,798.21, 968,775.08 and 213,530.37

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Solution

The fourth proportional to 645,798.21, 968,775.08 and 213,530.37 is: 320,321.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,798.21 : 968,775.08 = 213,530.37 : x
  2. Step 2: Convert to fraction form
    645,798.21/968,775.08 = 213,530.37/x
  3. Step 3: Cross multiply
    645,798.21x = 968,775.08 × 213,530.37
  4. Step 4: Simplify right side
    645,798.21x = 206,862,900,211.53
  5. Step 5: Solve for x
    x = 206,862,900,211.53/645,798.21
  6. Step 6: Final answer
    x = 320,321.27

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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.