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Finding the Fourth Proportional to 154,636.80, 231,314.40 and 145,190.40

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Solution

The fourth proportional to 154,636.80, 231,314.40 and 145,190.40 is: 217,183.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,636.80 : 231,314.40 = 145,190.40 : x
  2. Step 2: Convert to fraction form
    154,636.80/231,314.40 = 145,190.40/x
  3. Step 3: Cross multiply
    154,636.80x = 231,314.40 × 145,190.40
  4. Step 4: Simplify right side
    154,636.80x = 33,584,630,261.76
  5. Step 5: Solve for x
    x = 33,584,630,261.76/154,636.80
  6. Step 6: Final answer
    x = 217,183.94

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1.5x scale

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.