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Finding the Fourth Proportional to 291,245.57, 436,893.60 and 88,887.20

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Solution

The fourth proportional to 291,245.57, 436,893.60 and 88,887.20 is: 133,338.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,245.57 : 436,893.60 = 88,887.20 : x
  2. Step 2: Convert to fraction form
    291,245.57/436,893.60 = 88,887.20/x
  3. Step 3: Cross multiply
    291,245.57x = 436,893.60 × 88,887.20
  4. Step 4: Simplify right side
    291,245.57x = 38,834,247,679.55
  5. Step 5: Solve for x
    x = 38,834,247,679.55/291,245.57
  6. Step 6: Final answer
    x = 133,338.50

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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.