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Finding the Fourth Proportional to 279,283.30, 418,855.64 and 79,605.41

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Solution

The fourth proportional to 279,283.30, 418,855.64 and 79,605.41 is: 119,388.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,283.30 : 418,855.64 = 79,605.41 : x
  2. Step 2: Convert to fraction form
    279,283.30/418,855.64 = 79,605.41/x
  3. Step 3: Cross multiply
    279,283.30x = 418,855.64 × 79,605.41
  4. Step 4: Simplify right side
    279,283.30x = 33,343,172,460.71
  5. Step 5: Solve for x
    x = 33,343,172,460.71/279,283.30
  6. Step 6: Final answer
    x = 119,388.35

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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.