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Finding the Fourth Proportional to 279,893.36, 386,263.34 and 159,055.22

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Solution

The fourth proportional to 279,893.36, 386,263.34 and 159,055.22 is: 219,502.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,893.36 : 386,263.34 = 159,055.22 : x
  2. Step 2: Convert to fraction form
    279,893.36/386,263.34 = 159,055.22/x
  3. Step 3: Cross multiply
    279,893.36x = 386,263.34 × 159,055.22
  4. Step 4: Simplify right side
    279,893.36x = 61,437,200,521.63
  5. Step 5: Solve for x
    x = 61,437,200,521.63/279,893.36
  6. Step 6: Final answer
    x = 219,502.17

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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.