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Finding the Fourth Proportional to 211,396.96, 316,672.96 and 127,110.98

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Solution

The fourth proportional to 211,396.96, 316,672.96 and 127,110.98 is: 190,412.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,396.96 : 316,672.96 = 127,110.98 : x
  2. Step 2: Convert to fraction form
    211,396.96/316,672.96 = 127,110.98/x
  3. Step 3: Cross multiply
    211,396.96x = 316,672.96 × 127,110.98
  4. Step 4: Simplify right side
    211,396.96x = 40,252,610,285.10
  5. Step 5: Solve for x
    x = 40,252,610,285.10/211,396.96
  6. Step 6: Final answer
    x = 190,412.44

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1.5x scale

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.