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Finding the Fourth Proportional to 291,454.50, 437,199.30 and 91,781.40

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Solution

The fourth proportional to 291,454.50, 437,199.30 and 91,781.40 is: 137,677.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,454.50 : 437,199.30 = 91,781.40 : x
  2. Step 2: Convert to fraction form
    291,454.50/437,199.30 = 91,781.40/x
  3. Step 3: Cross multiply
    291,454.50x = 437,199.30 × 91,781.40
  4. Step 4: Simplify right side
    291,454.50x = 40,126,763,833.02
  5. Step 5: Solve for x
    x = 40,126,763,833.02/291,454.50
  6. Step 6: Final answer
    x = 137,677.63

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.