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Finding the Fourth Proportional to 279,214.29, 418,758.26 and 79,530.26

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Solution

The fourth proportional to 279,214.29, 418,758.26 and 79,530.26 is: 119,277.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,214.29 : 418,758.26 = 79,530.26 : x
  2. Step 2: Convert to fraction form
    279,214.29/418,758.26 = 79,530.26/x
  3. Step 3: Cross multiply
    279,214.29x = 418,758.26 × 79,530.26
  4. Step 4: Simplify right side
    279,214.29x = 33,303,950,803.51
  5. Step 5: Solve for x
    x = 33,303,950,803.51/279,214.29
  6. Step 6: Final answer
    x = 119,277.39

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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.