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Finding the Fourth Proportional to 291,880.32, 437,785.92 and 92,192.64

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Solution

The fourth proportional to 291,880.32, 437,785.92 and 92,192.64 is: 138,278.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,880.32 : 437,785.92 = 92,192.64 : x
  2. Step 2: Convert to fraction form
    291,880.32/437,785.92 = 92,192.64/x
  3. Step 3: Cross multiply
    291,880.32x = 437,785.92 × 92,192.64
  4. Step 4: Simplify right side
    291,880.32x = 40,360,639,719.63
  5. Step 5: Solve for x
    x = 40,360,639,719.63/291,880.32
  6. Step 6: Final answer
    x = 138,278.04

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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.