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Finding the Fourth Proportional to 285,017.85, 427,244.78 and 134,994.45

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Solution

The fourth proportional to 285,017.85, 427,244.78 and 134,994.45 is: 202,358.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,017.85 : 427,244.78 = 134,994.45 : x
  2. Step 2: Convert to fraction form
    285,017.85/427,244.78 = 134,994.45/x
  3. Step 3: Cross multiply
    285,017.85x = 427,244.78 × 134,994.45
  4. Step 4: Simplify right side
    285,017.85x = 57,675,673,416.50
  5. Step 5: Solve for x
    x = 57,675,673,416.50/285,017.85
  6. Step 6: Final answer
    x = 202,358.11

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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.