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Finding the Fourth Proportional to 291,370.60, 387,771.73 and 291,370.60

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Solution

The fourth proportional to 291,370.60, 387,771.73 and 291,370.60 is: 387,771.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,370.60 : 387,771.73 = 291,370.60 : x
  2. Step 2: Convert to fraction form
    291,370.60/387,771.73 = 291,370.60/x
  3. Step 3: Cross multiply
    291,370.60x = 387,771.73 × 291,370.60
  4. Step 4: Simplify right side
    291,370.60x = 112,985,281,633.14
  5. Step 5: Solve for x
    x = 112,985,281,633.14/291,370.60
  6. Step 6: Final answer
    x = 387,771.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.