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Finding the Fourth Proportional to 202,418.40, 303,368.40 and 155,438.40

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Solution

The fourth proportional to 202,418.40, 303,368.40 and 155,438.40 is: 232,958.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,418.40 : 303,368.40 = 155,438.40 : x
  2. Step 2: Convert to fraction form
    202,418.40/303,368.40 = 155,438.40/x
  3. Step 3: Cross multiply
    202,418.40x = 303,368.40 × 155,438.40
  4. Step 4: Simplify right side
    202,418.40x = 47,155,098,706.56
  5. Step 5: Solve for x
    x = 47,155,098,706.56/202,418.40
  6. Step 6: Final answer
    x = 232,958.56

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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.