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Finding the Fourth Proportional to 281,609.31, 388,620.80 and 168,458.79

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Solution

The fourth proportional to 281,609.31, 388,620.80 and 168,458.79 is: 232,473.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,609.31 : 388,620.80 = 168,458.79 : x
  2. Step 2: Convert to fraction form
    281,609.31/388,620.80 = 168,458.79/x
  3. Step 3: Cross multiply
    281,609.31x = 388,620.80 × 168,458.79
  4. Step 4: Simplify right side
    281,609.31x = 65,466,588,894.54
  5. Step 5: Solve for x
    x = 65,466,588,894.54/281,609.31
  6. Step 6: Final answer
    x = 232,473.10

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1.5x scale

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.