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Finding the Fourth Proportional to 268,744.80, 403,117.20 and 97,979.32

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Solution

The fourth proportional to 268,744.80, 403,117.20 and 97,979.32 is: 146,968.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,744.80 : 403,117.20 = 97,979.32 : x
  2. Step 2: Convert to fraction form
    268,744.80/403,117.20 = 97,979.32/x
  3. Step 3: Cross multiply
    268,744.80x = 403,117.20 × 97,979.32
  4. Step 4: Simplify right side
    268,744.80x = 39,497,149,136.30
  5. Step 5: Solve for x
    x = 39,497,149,136.30/268,744.80
  6. Step 6: Final answer
    x = 146,968.98

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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.