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Finding the Fourth Proportional to 202,439.40, 303,399.90 and 155,459.40

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Solution

The fourth proportional to 202,439.40, 303,399.90 and 155,459.40 is: 232,990.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,439.40 : 303,399.90 = 155,459.40 : x
  2. Step 2: Convert to fraction form
    202,439.40/303,399.90 = 155,459.40/x
  3. Step 3: Cross multiply
    202,439.40x = 303,399.90 × 155,459.40
  4. Step 4: Simplify right side
    202,439.40x = 47,166,366,414.06
  5. Step 5: Solve for x
    x = 47,166,366,414.06/202,439.40
  6. Step 6: Final answer
    x = 232,990.05

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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.