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Finding the Fourth Proportional to 279,553.40, 419,330.10 and 235,266.65

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Solution

The fourth proportional to 279,553.40, 419,330.10 and 235,266.65 is: 352,899.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,553.40 : 419,330.10 = 235,266.65 : x
  2. Step 2: Convert to fraction form
    279,553.40/419,330.10 = 235,266.65/x
  3. Step 3: Cross multiply
    279,553.40x = 419,330.10 × 235,266.65
  4. Step 4: Simplify right side
    279,553.40x = 98,654,387,871.17
  5. Step 5: Solve for x
    x = 98,654,387,871.17/279,553.40
  6. Step 6: Final answer
    x = 352,899.98

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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.