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Finding the Fourth Proportional to 305,998.80, 457,961.40 and 305,998.80

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Solution

The fourth proportional to 305,998.80, 457,961.40 and 305,998.80 is: 457,961.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,998.80 : 457,961.40 = 305,998.80 : x
  2. Step 2: Convert to fraction form
    305,998.80/457,961.40 = 305,998.80/x
  3. Step 3: Cross multiply
    305,998.80x = 457,961.40 × 305,998.80
  4. Step 4: Simplify right side
    305,998.80x = 140,135,638,846.32
  5. Step 5: Solve for x
    x = 140,135,638,846.32/305,998.80
  6. Step 6: Final answer
    x = 457,961.40

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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.