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Finding the Fourth Proportional to 303,343.60, 455,015.40 and 291,679.60

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Solution

The fourth proportional to 303,343.60, 455,015.40 and 291,679.60 is: 437,519.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,343.60 : 455,015.40 = 291,679.60 : x
  2. Step 2: Convert to fraction form
    303,343.60/455,015.40 = 291,679.60/x
  3. Step 3: Cross multiply
    303,343.60x = 455,015.40 × 291,679.60
  4. Step 4: Simplify right side
    303,343.60x = 132,718,709,865.84
  5. Step 5: Solve for x
    x = 132,718,709,865.84/303,343.60
  6. Step 6: Final answer
    x = 437,519.40

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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.