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Finding the Fourth Proportional to 324,015.80, 485,877.90 and 146,431.40

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Solution

The fourth proportional to 324,015.80, 485,877.90 and 146,431.40 is: 219,581.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,015.80 : 485,877.90 = 146,431.40 : x
  2. Step 2: Convert to fraction form
    324,015.80/485,877.90 = 146,431.40/x
  3. Step 3: Cross multiply
    324,015.80x = 485,877.90 × 146,431.40
  4. Step 4: Simplify right side
    324,015.80x = 71,147,781,126.06
  5. Step 5: Solve for x
    x = 71,147,781,126.06/324,015.80
  6. Step 6: Final answer
    x = 219,581.21

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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.