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Finding the Fourth Proportional to 155,480.28, 214,524.72 and 87,484

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Solution

The fourth proportional to 155,480.28, 214,524.72 and 87,484 is: 120,706.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,480.28 : 214,524.72 = 87,484 : x
  2. Step 2: Convert to fraction form
    155,480.28/214,524.72 = 87,484/x
  3. Step 3: Cross multiply
    155,480.28x = 214,524.72 × 87,484
  4. Step 4: Simplify right side
    155,480.28x = 18,767,480,604.48
  5. Step 5: Solve for x
    x = 18,767,480,604.48/155,480.28
  6. Step 6: Final answer
    x = 120,706.50

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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.