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Finding the Fourth Proportional to 154,220.40, 231,330.60 and 137,307.60

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Solution

The fourth proportional to 154,220.40, 231,330.60 and 137,307.60 is: 205,961.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,220.40 : 231,330.60 = 137,307.60 : x
  2. Step 2: Convert to fraction form
    154,220.40/231,330.60 = 137,307.60/x
  3. Step 3: Cross multiply
    154,220.40x = 231,330.60 × 137,307.60
  4. Step 4: Simplify right side
    154,220.40x = 31,763,449,492.56
  5. Step 5: Solve for x
    x = 31,763,449,492.56/154,220.40
  6. Step 6: Final answer
    x = 205,961.40

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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.