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Finding the Fourth Proportional to 320,600.40, 480,900.60 and 133,587.60

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Solution

The fourth proportional to 320,600.40, 480,900.60 and 133,587.60 is: 200,381.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,600.40 : 480,900.60 = 133,587.60 : x
  2. Step 2: Convert to fraction form
    320,600.40/480,900.60 = 133,587.60/x
  3. Step 3: Cross multiply
    320,600.40x = 480,900.60 × 133,587.60
  4. Step 4: Simplify right side
    320,600.40x = 64,242,356,992.56
  5. Step 5: Solve for x
    x = 64,242,356,992.56/320,600.40
  6. Step 6: Final answer
    x = 200,381.40

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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.