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Finding the Fourth Proportional to 279,145.51, 418,738.28 and 116,876.26

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Solution

The fourth proportional to 279,145.51, 418,738.28 and 116,876.26 is: 175,322.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,145.51 : 418,738.28 = 116,876.26 : x
  2. Step 2: Convert to fraction form
    279,145.51/418,738.28 = 116,876.26/x
  3. Step 3: Cross multiply
    279,145.51x = 418,738.28 × 116,876.26
  4. Step 4: Simplify right side
    279,145.51x = 48,940,564,085.23
  5. Step 5: Solve for x
    x = 48,940,564,085.23/279,145.51
  6. Step 6: Final answer
    x = 175,322.77

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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.