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Finding the Fourth Proportional to 210,480.75, 315,524.30 and 77,325.26

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Solution

The fourth proportional to 210,480.75, 315,524.30 and 77,325.26 is: 115,915.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,480.75 : 315,524.30 = 77,325.26 : x
  2. Step 2: Convert to fraction form
    210,480.75/315,524.30 = 77,325.26/x
  3. Step 3: Cross multiply
    210,480.75x = 315,524.30 × 77,325.26
  4. Step 4: Simplify right side
    210,480.75x = 24,397,996,569.57
  5. Step 5: Solve for x
    x = 24,397,996,569.57/210,480.75
  6. Step 6: Final answer
    x = 115,915.57

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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.