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Finding the Fourth Proportional to 281,900.83, 389,030.88 and 161,061.79

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Solution

The fourth proportional to 281,900.83, 389,030.88 and 161,061.79 is: 222,269.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,900.83 : 389,030.88 = 161,061.79 : x
  2. Step 2: Convert to fraction form
    281,900.83/389,030.88 = 161,061.79/x
  3. Step 3: Cross multiply
    281,900.83x = 389,030.88 × 161,061.79
  4. Step 4: Simplify right side
    281,900.83x = 62,658,009,898.08
  5. Step 5: Solve for x
    x = 62,658,009,898.08/281,900.83
  6. Step 6: Final answer
    x = 222,269.69

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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.