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Finding the Fourth Proportional to 356,689.82, 492,221.28 and 195,539.36

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Solution

The fourth proportional to 356,689.82, 492,221.28 and 195,539.36 is: 269,838.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,689.82 : 492,221.28 = 195,539.36 : x
  2. Step 2: Convert to fraction form
    356,689.82/492,221.28 = 195,539.36/x
  3. Step 3: Cross multiply
    356,689.82x = 492,221.28 × 195,539.36
  4. Step 4: Simplify right side
    356,689.82x = 96,248,631,608.47
  5. Step 5: Solve for x
    x = 96,248,631,608.47/356,689.82
  6. Step 6: Final answer
    x = 269,838.46

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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.