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Finding the Fourth Proportional to 281,925.51, 389,053.58 and 161,065.82

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Solution

The fourth proportional to 281,925.51, 389,053.58 and 161,065.82 is: 222,268.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,925.51 : 389,053.58 = 161,065.82 : x
  2. Step 2: Convert to fraction form
    281,925.51/389,053.58 = 161,065.82/x
  3. Step 3: Cross multiply
    281,925.51x = 389,053.58 × 161,065.82
  4. Step 4: Simplify right side
    281,925.51x = 62,663,231,136.04
  5. Step 5: Solve for x
    x = 62,663,231,136.04/281,925.51
  6. Step 6: Final answer
    x = 222,268.75

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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.