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Finding the Fourth Proportional to 154,002.20, 215,078.20 and 154,002.20

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Solution

The fourth proportional to 154,002.20, 215,078.20 and 154,002.20 is: 215,078.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,002.20 : 215,078.20 = 154,002.20 : x
  2. Step 2: Convert to fraction form
    154,002.20/215,078.20 = 154,002.20/x
  3. Step 3: Cross multiply
    154,002.20x = 215,078.20 × 154,002.20
  4. Step 4: Simplify right side
    154,002.20x = 33,122,515,972.04
  5. Step 5: Solve for x
    x = 33,122,515,972.04/154,002.20
  6. Step 6: Final answer
    x = 215,078.20

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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.