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Finding the Fourth Proportional to 547,874.88, 756,142.56 and 315,297.06

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Solution

The fourth proportional to 547,874.88, 756,142.56 and 315,297.06 is: 435,153.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,874.88 : 756,142.56 = 315,297.06 : x
  2. Step 2: Convert to fraction form
    547,874.88/756,142.56 = 315,297.06/x
  3. Step 3: Cross multiply
    547,874.88x = 756,142.56 × 315,297.06
  4. Step 4: Simplify right side
    547,874.88x = 238,409,526,108.87
  5. Step 5: Solve for x
    x = 238,409,526,108.87/547,874.88
  6. Step 6: Final answer
    x = 435,153.23

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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.