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Finding the Fourth Proportional to 281,784, 388,901.70 and 174,388.62

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Solution

The fourth proportional to 281,784, 388,901.70 and 174,388.62 is: 240,680.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,784 : 388,901.70 = 174,388.62 : x
  2. Step 2: Convert to fraction form
    281,784/388,901.70 = 174,388.62/x
  3. Step 3: Cross multiply
    281,784x = 388,901.70 × 174,388.62
  4. Step 4: Simplify right side
    281,784x = 67,820,030,778.65
  5. Step 5: Solve for x
    x = 67,820,030,778.65/281,784
  6. Step 6: Final answer
    x = 240,680.91

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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.