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Finding the Fourth Proportional to 279,451.72, 385,696.51 and 158,604.32

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Solution

The fourth proportional to 279,451.72, 385,696.51 and 158,604.32 is: 218,904.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,451.72 : 385,696.51 = 158,604.32 : x
  2. Step 2: Convert to fraction form
    279,451.72/385,696.51 = 158,604.32/x
  3. Step 3: Cross multiply
    279,451.72x = 385,696.51 × 158,604.32
  4. Step 4: Simplify right side
    279,451.72x = 61,173,132,694.92
  5. Step 5: Solve for x
    x = 61,173,132,694.92/279,451.72
  6. Step 6: Final answer
    x = 218,904.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.