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Finding the Fourth Proportional to 285,081.80, 427,622.70 and 118,848.20

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Solution

The fourth proportional to 285,081.80, 427,622.70 and 118,848.20 is: 178,272.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,081.80 : 427,622.70 = 118,848.20 : x
  2. Step 2: Convert to fraction form
    285,081.80/427,622.70 = 118,848.20/x
  3. Step 3: Cross multiply
    285,081.80x = 427,622.70 × 118,848.20
  4. Step 4: Simplify right side
    285,081.80x = 50,822,188,174.14
  5. Step 5: Solve for x
    x = 50,822,188,174.14/285,081.80
  6. Step 6: Final answer
    x = 178,272.30

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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.