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Finding the Fourth Proportional to 279,891.36, 386,260.57 and 159,053.22

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Solution

The fourth proportional to 279,891.36, 386,260.57 and 159,053.22 is: 219,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,891.36 : 386,260.57 = 159,053.22 : x
  2. Step 2: Convert to fraction form
    279,891.36/386,260.57 = 159,053.22/x
  3. Step 3: Cross multiply
    279,891.36x = 386,260.57 × 159,053.22
  4. Step 4: Simplify right side
    279,891.36x = 61,435,985,088.60
  5. Step 5: Solve for x
    x = 61,435,985,088.60/279,891.36
  6. Step 6: Final answer
    x = 219,499.40

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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.