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Finding the Fourth Proportional to 291,812.40, 437,378.40 and 134,056.80

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Solution

The fourth proportional to 291,812.40, 437,378.40 and 134,056.80 is: 200,928.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,812.40 : 437,378.40 = 134,056.80 : x
  2. Step 2: Convert to fraction form
    291,812.40/437,378.40 = 134,056.80/x
  3. Step 3: Cross multiply
    291,812.40x = 437,378.40 × 134,056.80
  4. Step 4: Simplify right side
    291,812.40x = 58,633,548,693.12
  5. Step 5: Solve for x
    x = 58,633,548,693.12/291,812.40
  6. Step 6: Final answer
    x = 200,928.91

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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.