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Finding the Fourth Proportional to 155,103.70, 217,440.43 and 155,103.70

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Solution

The fourth proportional to 155,103.70, 217,440.43 and 155,103.70 is: 217,440.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,103.70 : 217,440.43 = 155,103.70 : x
  2. Step 2: Convert to fraction form
    155,103.70/217,440.43 = 155,103.70/x
  3. Step 3: Cross multiply
    155,103.70x = 217,440.43 × 155,103.70
  4. Step 4: Simplify right side
    155,103.70x = 33,725,815,222.59
  5. Step 5: Solve for x
    x = 33,725,815,222.59/155,103.70
  6. Step 6: Final answer
    x = 217,440.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.