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Finding the Fourth Proportional to 324,602.60, 486,903.90 and 87,974.60

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Solution

The fourth proportional to 324,602.60, 486,903.90 and 87,974.60 is: 131,961.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,602.60 : 486,903.90 = 87,974.60 : x
  2. Step 2: Convert to fraction form
    324,602.60/486,903.90 = 87,974.60/x
  3. Step 3: Cross multiply
    324,602.60x = 486,903.90 × 87,974.60
  4. Step 4: Simplify right side
    324,602.60x = 42,835,175,840.94
  5. Step 5: Solve for x
    x = 42,835,175,840.94/324,602.60
  6. Step 6: Final answer
    x = 131,961.90

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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.