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Finding the Fourth Proportional to 281,841.48, 388,637.46 and 213,982.92

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Solution

The fourth proportional to 281,841.48, 388,637.46 and 213,982.92 is: 295,065.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,841.48 : 388,637.46 = 213,982.92 : x
  2. Step 2: Convert to fraction form
    281,841.48/388,637.46 = 213,982.92/x
  3. Step 3: Cross multiply
    281,841.48x = 388,637.46 × 213,982.92
  4. Step 4: Simplify right side
    281,841.48x = 83,161,778,512.18
  5. Step 5: Solve for x
    x = 83,161,778,512.18/281,841.48
  6. Step 6: Final answer
    x = 295,065.79

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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.