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Finding the Fourth Proportional to 662,796.60, 994,340.70 and 213,538.20

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Solution

The fourth proportional to 662,796.60, 994,340.70 and 213,538.20 is: 320,354.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,796.60 : 994,340.70 = 213,538.20 : x
  2. Step 2: Convert to fraction form
    662,796.60/994,340.70 = 213,538.20/x
  3. Step 3: Cross multiply
    662,796.60x = 994,340.70 × 213,538.20
  4. Step 4: Simplify right side
    662,796.60x = 212,329,723,264.74
  5. Step 5: Solve for x
    x = 212,329,723,264.74/662,796.60
  6. Step 6: Final answer
    x = 320,354.27

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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.