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Finding the Fourth Proportional to 297,330.40, 446,053.20 and 128,850.40

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Solution

The fourth proportional to 297,330.40, 446,053.20 and 128,850.40 is: 193,300.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,330.40 : 446,053.20 = 128,850.40 : x
  2. Step 2: Convert to fraction form
    297,330.40/446,053.20 = 128,850.40/x
  3. Step 3: Cross multiply
    297,330.40x = 446,053.20 × 128,850.40
  4. Step 4: Simplify right side
    297,330.40x = 57,474,133,241.28
  5. Step 5: Solve for x
    x = 57,474,133,241.28/297,330.40
  6. Step 6: Final answer
    x = 193,300.56

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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.