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Finding the Fourth Proportional to 202,378.40, 303,308.40 and 155,398.40

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Solution

The fourth proportional to 202,378.40, 303,308.40 and 155,398.40 is: 232,898.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,378.40 : 303,308.40 = 155,398.40 : x
  2. Step 2: Convert to fraction form
    202,378.40/303,308.40 = 155,398.40/x
  3. Step 3: Cross multiply
    202,378.40x = 303,308.40 × 155,398.40
  4. Step 4: Simplify right side
    202,378.40x = 47,133,640,066.56
  5. Step 5: Solve for x
    x = 47,133,640,066.56/202,378.40
  6. Step 6: Final answer
    x = 232,898.57

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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.