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Finding the Fourth Proportional to 440,196.98, 660,520.65 and 209,646.96

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Solution

The fourth proportional to 440,196.98, 660,520.65 and 209,646.96 is: 314,577.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,196.98 : 660,520.65 = 209,646.96 : x
  2. Step 2: Convert to fraction form
    440,196.98/660,520.65 = 209,646.96/x
  3. Step 3: Cross multiply
    440,196.98x = 660,520.65 × 209,646.96
  4. Step 4: Simplify right side
    440,196.98x = 138,476,145,867.03
  5. Step 5: Solve for x
    x = 138,476,145,867.03/440,196.98
  6. Step 6: Final answer
    x = 314,577.68

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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.