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Finding the Fourth Proportional to 154,261.80, 231,392.70 and 145,513.80

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Solution

The fourth proportional to 154,261.80, 231,392.70 and 145,513.80 is: 218,270.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,261.80 : 231,392.70 = 145,513.80 : x
  2. Step 2: Convert to fraction form
    154,261.80/231,392.70 = 145,513.80/x
  3. Step 3: Cross multiply
    154,261.80x = 231,392.70 × 145,513.80
  4. Step 4: Simplify right side
    154,261.80x = 33,670,831,069.26
  5. Step 5: Solve for x
    x = 33,670,831,069.26/154,261.80
  6. Step 6: Final answer
    x = 218,270.70

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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.