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Finding the Fourth Proportional to 279,896.33, 386,237.63 and 157,407.02

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Solution

The fourth proportional to 279,896.33, 386,237.63 and 157,407.02 is: 217,210.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,896.33 : 386,237.63 = 157,407.02 : x
  2. Step 2: Convert to fraction form
    279,896.33/386,237.63 = 157,407.02/x
  3. Step 3: Cross multiply
    279,896.33x = 386,237.63 × 157,407.02
  4. Step 4: Simplify right side
    279,896.33x = 60,796,514,260.88
  5. Step 5: Solve for x
    x = 60,796,514,260.88/279,896.33
  6. Step 6: Final answer
    x = 217,210.83

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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.