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Finding the Fourth Proportional to 285,079.80, 427,619.70 and 118,846.20

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Solution

The fourth proportional to 285,079.80, 427,619.70 and 118,846.20 is: 178,269.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,079.80 : 427,619.70 = 118,846.20 : x
  2. Step 2: Convert to fraction form
    285,079.80/427,619.70 = 118,846.20/x
  3. Step 3: Cross multiply
    285,079.80x = 427,619.70 × 118,846.20
  4. Step 4: Simplify right side
    285,079.80x = 50,820,976,390.14
  5. Step 5: Solve for x
    x = 50,820,976,390.14/285,079.80
  6. Step 6: Final answer
    x = 178,269.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.