Home / 285,083.11-427,705.40-142,756.57

Finding the Fourth Proportional to 285,083.11, 427,705.40 and 142,756.57

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Solution

The fourth proportional to 285,083.11, 427,705.40 and 142,756.57 is: 214,175.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,083.11 : 427,705.40 = 142,756.57 : x
  2. Step 2: Convert to fraction form
    285,083.11/427,705.40 = 142,756.57/x
  3. Step 3: Cross multiply
    285,083.11x = 427,705.40 × 142,756.57
  4. Step 4: Simplify right side
    285,083.11x = 61,057,755,874.48
  5. Step 5: Solve for x
    x = 61,057,755,874.48/285,083.11
  6. Step 6: Final answer
    x = 214,175.28

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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.