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Finding the Fourth Proportional to 211,280.64, 316,704.69 and 92,929.92

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Solution

The fourth proportional to 211,280.64, 316,704.69 and 92,929.92 is: 139,299.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,280.64 : 316,704.69 = 92,929.92 : x
  2. Step 2: Convert to fraction form
    211,280.64/316,704.69 = 92,929.92/x
  3. Step 3: Cross multiply
    211,280.64x = 316,704.69 × 92,929.92
  4. Step 4: Simplify right side
    211,280.64x = 29,431,341,505.32
  5. Step 5: Solve for x
    x = 29,431,341,505.32/211,280.64
  6. Step 6: Final answer
    x = 139,299.76

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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.