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Finding the Fourth Proportional to 203,472.40, 305,135.70 and 103,599.40

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Solution

The fourth proportional to 203,472.40, 305,135.70 and 103,599.40 is: 155,361.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,472.40 : 305,135.70 = 103,599.40 : x
  2. Step 2: Convert to fraction form
    203,472.40/305,135.70 = 103,599.40/x
  3. Step 3: Cross multiply
    203,472.40x = 305,135.70 × 103,599.40
  4. Step 4: Simplify right side
    203,472.40x = 31,611,875,438.58
  5. Step 5: Solve for x
    x = 31,611,875,438.58/203,472.40
  6. Step 6: Final answer
    x = 155,361.98

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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.